updated gradle-build-action to v2

Author: Mike Friesen

.github/workflows/main.yml

@@ -31,6 +31,6 @@ jobs:
         java-version: '11'
         distribution: 'temurin'
     - name: Build with Gradle
-      uses: gradle/gradle-build-action@0d13054264b0bb894ded474f08ebb30921341cee
+      uses: gradle/gradle-build-action@v2
       with:
         arguments: test