Enable the check of the license agreement in a PR

Author: marko-bekhta

.github/hibernate-github-bot.yml

@@ -63,3 +63,5 @@ develocity:
         replacement: "$0"
       - pattern: "org.hibernate.search|elasticsearch|opensearch|main|HEAD|\\d+.\\d+|PR-\\d+"
         replacement: "" # Just remove these tags
+licenseAgreement:
+  enabled: true