build(gradle): replace deprecated outputFile with destinationFile in writeVersion task (#4167)

# Description of Changes

- Replaced the deprecated `outputFile` property with `destinationFile`
in the `writeVersion` Gradle task.
- Updated the logging statement to use
`destinationFile.get().asFile.path` instead of the old
`outputFile.path`.
- This change ensures compatibility with newer Gradle versions and
removes deprecation warnings.

---

## Checklist

### General

- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

build.gradle

@@ -74,8 +74,8 @@ allprojects {
 }
 
 tasks.register('writeVersion', WriteProperties) {
-    outputFile = layout.projectDirectory.file('app/common/src/main/resources/version.properties')
-    println "Writing version.properties to ${outputFile.path}"
+    destinationFile = layout.projectDirectory.file('app/common/src/main/resources/version.properties')
+    println "Writing version.properties to ${destinationFile.get().asFile.path}"
     comment = "${new Date()}"
     property 'version', project.provider { project.version.toString() }
 }