Actions: Update Gradle to 7.6

Author: Hellwig-SE

.github/workflows/deploy_snapshot.yml

@@ -15,7 +15,7 @@ on:
     types: [ trigger_after_upstream_deploy ]
 
 env:
-  GRADLE_VERSION: 7.4 # Gradle version used
+  GRADLE_VERSION: 7.6 # Gradle version used
   GRADLE_CLI_OPTS: "-Pci --build-cache --refresh-dependencies" # CLI options passed to Gradle
   GRADLE_BUILD_ACTION_CACHE_KEY_JOB: "test-cache-${{ github.head_ref }}.${{ github.sha }}"
 

.github/workflows/test_branch.yml

@@ -12,7 +12,7 @@ on:
     branches-ignore: [ "dev" ] # Do not run this on the default branch
 
 env:
-  GRADLE_VERSION: 7.4 # Gradle version used
+  GRADLE_VERSION: 7.6 # Gradle version used
   GRADLE_CLI_OPTS: "-Pci --build-cache --refresh-dependencies" # CLI options passed to Gradle
   GRADLE_BUILD_ACTION_CACHE_KEY_JOB: "test-cache-${{ github.head_ref }}.${{ github.sha }}"