Switch to test on LTS versions

Author: gnodet

.github/workflows/build.yml

@@ -30,7 +30,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest, windows-latest, macos-latest ]
-        java: [ '1.8', '11', '15' ]
+        java: [ '1.8', '11', '17' ]
     steps:
       - uses: actions/checkout@v2
         with: