feat(deploy): added cache Gradle step for faster deploy

.gitea/workflows/cicd.yaml

@@ -21,6 +21,16 @@ jobs:
           java-version: '21'
           distribution: 'temurin'
 
+      - name: Cache Gradle
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: gradle-${{ runner.os }}-${{ hashFiles('backend/gradle/wrapper/gradle-wrapper.properties', 'backend/**/*.gradle*', 'backend/gradle.properties') }}
+          restore-keys: |
+            gradle-${{ runner.os }}-
+
       - name: Run Tests with Gradle
         run: |
           cd backend