Merge pull request #18 from wiremock/update-actions-cache-version

actions/cache@v1 is now deprecated so update to v4

Author: leeturner

Diff for: .github/workflows/gradle.yml

@@ -35,7 +35,7 @@ jobs:
       run: chmod +x gradlew
 
     - name: Cache Gradle packages
-      uses: actions/cache@v1
+      uses: actions/cache@v4
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}