update to "actions/cache@v4"

Author: Haehnchen

.github/workflows/gradle.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: Checkout repository and submodules
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         submodules: recursive
 
@@ -28,14 +28,14 @@ jobs:
 
     # Cache Gradle dependencies
     - name: Setup Gradle Dependencies Cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-v2-gradle-caches-${{ hashFiles('**/*.gradle', '**/*.gradle.kts', 'gradle.properties') }}
 
     # Cache Gradle Wrapper
     - name: Setup Gradle Wrapper Cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.gradle/wrapper
         key: ${{ runner.os }}-v2-gradle-wrapper-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}