outdated Gradle functions to the Gradle 9.0 standard (#2740)

# Description

Please provide a summary of the changes, including relevant motivation
and context.

Closes #(issue_number)

## Checklist

- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have performed a self-review of my own code
- [ ] I have attached images of the change if it is UI based
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] If my code has heavily changed functionality I have updated
relevant docs on [Stirling-PDFs doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
- [x] My changes generate no new warnings
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

build.gradle

@@ -7,8 +7,8 @@ plugins {
     id "edu.sc.seis.launch4j" version "3.0.6"
     id "com.diffplug.spotless" version "7.0.2"
     id "com.github.jk1.dependency-license-report" version "2.9"
-	//id "nebula.lint" version "19.0.3"
+    //id "nebula.lint" version "19.0.3"
-	id("org.panteleyev.jpackageplugin") version "1.6.0"
+    id("org.panteleyev.jpackageplugin") version "1.6.0"
 }
 
 import com.github.jk1.license.render.*
@@ -35,9 +35,9 @@ java {
 
 repositories {
     mavenCentral()
-    maven { url "https://jitpack.io" }
+    maven { url = "https://jitpack.io" }
-    maven { url "https://build.shibboleth.net/maven/releases" }
+    maven { url = "https://build.shibboleth.net/maven/releases" }
-    maven { url "https://maven.pkg.github.com/jcefmaven/jcefmaven" }
+    maven { url = "https://maven.pkg.github.com/jcefmaven/jcefmaven" }
 
 }
 
@@ -66,7 +66,7 @@ sourceSets {
             }
 
             if (System.getenv("STIRLING_PDF_DESKTOP_UI") == "false") {
-            	exclude "stirling/software/SPDF/UI/impl/**"
+                exclude "stirling/software/SPDF/UI/impl/**"
             }
 
         }
@@ -138,10 +138,10 @@ jpackage {
 
     // Windows-specific configuration
     windows {
-    	launcherAsService = false
+        launcherAsService = false
-    	appVersion = project.version
+        appVersion = project.version
 
-    	winConsole = false
+        winConsole = false
         winMenu = true  // Creates start menu entry
         winShortcut = true  // Creates desktop shortcut
         winShortcutPrompt = true  // Lets user choose whether to create shortcuts
@@ -157,7 +157,7 @@ jpackage {
 
     // macOS-specific configuration
     mac {
-    	appVersion = getMacVersion(project.version.toString())
+        appVersion = getMacVersion(project.version.toString())
         icon = "src/main/resources/static/favicon.icns"
         type = "dmg"
         macPackageIdentifier = "com.stirling.software.pdf"
@@ -181,7 +181,7 @@ jpackage {
 
     // Linux-specific configuration
     linux {
-    	appVersion = project.version
+        appVersion = project.version
         icon = "src/main/resources/static/favicon.png"
         type = "deb" // Can also use "rpm" for Red Hat-based systems
 
@@ -229,9 +229,9 @@ launch4j {
     outfile="Stirling-PDF.exe"
 
     if(System.getenv("STIRLING_PDF_DESKTOP_UI") == 'true') {
-    	headerType = "gui"
+        headerType = "gui"
     } else {
-    	headerType = "console"
+        headerType = "console"
     }
     jarTask = tasks.bootJar
 
@@ -239,13 +239,11 @@ launch4j {
     downloadUrl="https://download.oracle.com/java/21/latest/jdk-21_windows-x64_bin.exe"
 
     if(System.getenv("STIRLING_PDF_DESKTOP_UI") == 'true') {
-    	variables=["BROWSER_OPEN=true", "STIRLING_PDF_DESKTOP_UI=true"]
+        variables=["BROWSER_OPEN=true", "STIRLING_PDF_DESKTOP_UI=true"]
     } else {
-    	variables=["BROWSER_OPEN=true"]
+        variables=["BROWSER_OPEN=true"]
     }
 
-
-
     jreMinVersion="17"
 
     mutexName="Stirling-PDF"
@@ -286,10 +284,10 @@ configurations.all {
 }
 dependencies {
 
-	if (System.getenv("STIRLING_PDF_DESKTOP_UI") != "false") {
+    if (System.getenv("STIRLING_PDF_DESKTOP_UI") != "false") {
-		implementation "me.friwi:jcefmaven:127.3.1"
+        implementation "me.friwi:jcefmaven:127.3.1"
-	    implementation "org.openjfx:javafx-controls:21"
+        implementation "org.openjfx:javafx-controls:21"
-	    implementation "org.openjfx:javafx-swing:21"
+        implementation "org.openjfx:javafx-swing:21"
     }
 
     //security updates
@@ -315,10 +313,10 @@ dependencies {
         implementation "org.springframework.boot:spring-boot-starter-data-jpa:$springBootVersion"
         implementation "org.springframework.boot:spring-boot-starter-oauth2-client:$springBootVersion"
 
-		implementation "org.springframework.session:spring-session-core:$springBootVersion"
+        implementation "org.springframework.session:spring-session-core:$springBootVersion"
         implementation "org.springframework:spring-jdbc:6.2.1"
 
-	    implementation 'com.unboundid.product.scim2:scim2-sdk-client:2.3.5'
+        implementation 'com.unboundid.product.scim2:scim2-sdk-client:2.3.5'
         // Don't upgrade h2database
         runtimeOnly "com.h2database:h2:2.3.232"
         runtimeOnly "org.postgresql:postgresql:42.7.4"
@@ -328,7 +326,7 @@ dependencies {
             implementation "org.opensaml:opensaml-saml-impl:$openSamlVersion"
         }
         implementation "org.springframework.security:spring-security-saml2-service-provider:$springSecuritySamlVersion"
-//		implementation 'org.springframework.security:spring-security-core:$springSecuritySamlVersion'
+        // implementation 'org.springframework.security:spring-security-core:$springSecuritySamlVersion'
         implementation 'com.coveo:saml-client:5.0.0'
 
 
@@ -398,7 +396,7 @@ dependencies {
     implementation "com.bucket4j:bucket4j_jdk17-core:8.14.0"
     implementation "com.fathzer:javaluator:3.0.5"
 
-	implementation 'com.vladsch.flexmark:flexmark-html2md-converter:0.64.8'
+    implementation 'com.vladsch.flexmark:flexmark-html2md-converter:0.64.8'
 
     developmentOnly("org.springframework.boot:spring-boot-devtools:$springBootVersion")
     compileOnly "org.projectlombok:lombok:$lombokVersion"
@@ -423,13 +421,13 @@ task writeVersion {
 }
 
 swaggerhubUpload {
-    //dependsOn generateOpenApiDocs  // Depends on your task generating Swagger docs
+    // dependsOn = generateOpenApiDocs  // Depends on your task generating Swagger docs
-    api "Stirling-PDF"  // The name of your API on SwaggerHub
+    api = "Stirling-PDF"  // The name of your API on SwaggerHub
-    owner "Frooodle"  // Your SwaggerHub username (or organization name)
+    owner = "Frooodle"  // Your SwaggerHub username (or organization name)
-    version project.version  // The version of your API
+    version = project.version  // The version of your API
-    inputFile "./SwaggerDoc.json"  // The path to your Swagger docs
+    inputFile = "./SwaggerDoc.json"  // The path to your Swagger docs
-    token  "${System.getenv("SWAGGERHUB_API_KEY")}"  // Your SwaggerHub API key, passed as an environment variable
+    token = "${System.getenv("SWAGGERHUB_API_KEY")}"  // Your SwaggerHub API key, passed as an environment variable
-    oas "3.0.0"  // The version of the OpenAPI Specification you"re using
+    oas = "3.0.0"  // The version of the OpenAPI Specification you"re using
 }
 
 jar {