ci: update Gradle setup action to v4 and add cache configuration in workflows

Author: wax911

.github/workflows/android-spotless.yml

@@ -18,7 +18,9 @@ jobs:
         java-version: 21
         distribution: 'adopt'
     - name: Setup Gradle
-      uses: gradle/gradle-build-action@v3
+      uses: gradle/actions/setup-gradle@v4
+      with:
+        cache-read-only: ${{ github.ref != 'refs/heads/develop' }}
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Run spotless check 

.github/workflows/android-test.yml

@@ -18,7 +18,9 @@ jobs:
         java-version: 21
         distribution: 'adopt'
     - name: Setup Gradle
-      uses: gradle/gradle-build-action@v3
+      uses: gradle/actions/setup-gradle@v4
+      with:
+        cache-read-only: ${{ github.ref != 'refs/heads/develop' }}
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Run tests 

.github/workflows/gradle-dokka.yml

@@ -15,7 +15,9 @@ jobs:
         java-version: 21
         distribution: 'adopt'
     - name: Setup Gradle
-      uses: gradle/gradle-build-action@v3
+      uses: gradle/actions/setup-gradle@v4
+      with:
+        cache-read-only: ${{ github.ref != 'refs/heads/develop' }}
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Generate docs with dokka

.gitignore

@@ -221,3 +221,8 @@ fabric.properties
 secrets.properties
 
 .kotlin/sessions/
+
+.idea/AndroidProjectSystem.xml
+.idea/runConfigurations.xml
+.idea/studiobot.xml
+.idea/kotlinc.xml