Upgrade to setup-java/v2 (#969)

Author: kyleconroy

.github/workflows/ci-kotlin.yml

@@ -31,9 +31,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/setup-java@v2
         with:
-          java-version: 11
+          distribution: 'adopt'
+          java-version: '11'
       - uses: eskatos/gradle-command-action@v1
         env:
           PG_USER: postgres