Bump build to JDK 17 (#536)

Author: gastaldi

.github/workflows/quarkus-snapshot.yaml

@@ -9,7 +9,7 @@ on:
 env:
   ECOSYSTEM_CI_REPO: quarkusio/quarkus-ecosystem-ci
   ECOSYSTEM_CI_REPO_FILE: context.yaml
-  JAVA_VERSION: 11
+  JAVA_VERSION: 17
 
   #########################
   # Repo specific setting #