increase versions in GitHub CI

Author: jbytecode

.github/workflows/maven_test.yml

@@ -13,14 +13,14 @@ jobs:
 
   test:
 
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 11
+    - name: Set up JDK 
       uses: actions/setup-java@v1
       with:
-        java-version: 11
+        java-version: 17
     - name: Set up R
       run: |
         sudo apt-get update