Upgrade CI

Author: mbastian

.github/workflows/ci.yml

@@ -8,9 +8,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Maven Central Repository
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v3
         with:
           java-version: '11'
           distribution: 'temurin'