Fix github actions using outdated JDK (#144)

.github/workflows/run-tests.yaml

@@ -9,10 +9,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
 
       - name: Configure Maven settings
         run: cp settings.xml $HOME/.m2/settings.xml