feat: use gradle cache

Author: FrogDevelopper

.github/workflows/continuous_integration.yml

@@ -18,15 +18,15 @@ jobs:
         with:
           fetch-depth: 0
 
-    - name: Cache gradle
-      uses: actions/cache@v2
-      with:
-        path: |
-          ~/.gradle/caches
-          ~/.gradle/wrapper
-        key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}
-        restore-keys: |
-          ${{ runner.os }}-gradle-
+      - name: Cache gradle
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
 
       - name: Setup Java 11
         uses: joschi/setup-jdk@v2