Test Play smoke test on Java 17 and 21 (#12490)

Author: trask

.github/workflows/pr-smoke-test-play-images.yml

@@ -15,7 +15,3 @@ jobs:
     with:
       project: ":smoke-tests:images:play"
       cache-read-only: true
-      # Play doesn't support Java 16+ yet
-      # https://github.com/playframework/playframework/pull/10819
-      skip-java-17: true
-      skip-java-21: true