This bug is part of the non-responsive maintainer procedure for java-maint-sig.org, following https://docs.fedoraproject.org/en-US/fesco/Policy_for_nonresponsive_package_maintainers/. Please respond if you are still active in Fedora and want to maintain snakeyaml.
Groups cannot be primary maintainer of a package, so they can't really be unresponsive, either. The person you should be asking if they are unresponsive is the "main admin", jerboaa, as they are the person primarily responsible for snakeyaml. (It seems you have been confused by the "Bugzilla assignee" entry that lists @java-maint-sig,java-maint-sig, but the primary maintainer is still the one listed under "Memmbers" as "main admin") here: https://src.fedoraproject.org/rpms/snakeyaml
Thank you Fabio. you are right that I confused the "Bugzilla assignee" as the main maintainer. Let me get in touch with the main admin whom I left out of this completely. Best wishes, Stefan