Revert bump setup-java

Author: cortinico

.github/workflows/pre-merge.yaml

@@ -17,7 +17,7 @@ jobs:
     - name: Install Python dependencies
       run: python -m pip install virtualenv pre-commit
     - name: Setup Java
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@v1
       with:
         java-version: 11
     - name: Run gradle preMerge task