Merge pull request 'Fix caching of pipeline' (!34) from fix/improve-checkstyle-pipeline into main

Reviewed-on: https://git.simonis.lol/projects/casino/pulls/34
Reviewed-by: Hop In, I Have Puppies AND WiFi <jleibl@noreply@simonis.lol>
Reviewed-by: Huy <ptran@noreply@simonis.lol>

.gitea/workflows/ci.yml

@@ -17,16 +17,15 @@ jobs:
         with:
           distribution: "temurin"
           java-version: "22"
-
-      - uses: actions/cache@v3
-        working-directory: ./backend
+      - name: "Cache Gradle dependencies"
+        uses: actions/cache@v3
         with:
           path: |
             ~/.gradle/caches
             ~/.gradle/wrapper
-          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          key: gradle-${{ runner.os }}-common
           restore-keys: |
-            ${{ runner.os }}-gradle-
+            gradle-${{ runner.os }}-
       - name: "Prepare Gradle"
         working-directory: ./backend
         run: gradle clean