Merge pull request #30 from thake/renovate/actions-setup-java-3.x

Update actions/setup-java action to v3

Author: thake

.github/workflows/gradle.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v3
       with:
         java-version: 1.8
     - name: Grant execute permission for gradlew