Bump gradle from 8.13-jdk21 to 8.14-jdk21 (#3439)

Bumps gradle from 8.13-jdk21 to 8.14-jdk21.


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Dockerfile.dev

@@ -1,7 +1,7 @@
 # dockerfile.dev
 
 # Basisimage: Gradle mit JDK 17 (Debian-basiert)
-FROM gradle:8.13-jdk17
+FROM gradle:8.14-jdk17
 
 # Als Root-Benutzer arbeiten, um benötigte Pakete zu installieren
 USER root

Dockerfile.fat

@@ -1,5 +1,5 @@
 # Build the application
-FROM gradle:8.13-jdk21 AS build
+FROM gradle:8.14-jdk21 AS build
 
 COPY build.gradle .
 COPY settings.gradle .