This is a patch release of Spine Web library, addressing the reported issues observed in production usage of 1.9.0.
In particular, prior to 1.9.0 release, all Topics that were detected as "stale" (meaning there was no active subscription for a topic), were forcefully removed from Firebase RDB by deleting their corresponding nodes.
In 1.9.0, this behaviour was changed, and such a forceful removal became no longer the case.
This release addresses the issue, as it turns out, there are no other convenient means to clear outdated Firebase nodes.
Also, due to a critical vulnerability in protobuf-js, its parent NPM dependency firebase was updated to the latest available 9.x release. We don't use the latest 10.x branch of NPM firebase artifact, as it may not be fully compatible with our library code in spine-web 1.9.0.