Update gradle_build.yaml using jq to work with Firebase keys

.github/workflows/gradle_build.yaml

@@ -14,10 +14,14 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
+    - name: Install jq
+      run: 
+        sudo apt-get install jq
+
     - name: Create google-services.json
       run:
           # mkdir -p app/src/google-services.json
-          echo "${{ secrets.FIREBASE_JSON }}" >> app/src/google-services.json
+          jq "${{ secrets.FIREBASE_JSON }}" app/src/google-services.json
 
     - name: set up JDK 17
       uses: actions/setup-java@v3