6774e95ff1
A recent importlib_resources 6.0.0 release dropped a bunch of deprecated functionality, some of which mailman-core is relying on. In order to address the resulting ImportError, pin back to the last working version of that transitive dependency for now. Upstream bug https://gitlab.com/mailman/mailman/-/issues/1093 is tracking this. Change-Id: Ia280a1771a5d11badb4c65ccd4ce87270adff93c