Version bump and changelog for 1.1-rc1

changes/changelog.d/1323.bugfix

-Avoid broken Faker version (#1323)

changes/changelog.d/876.enhancement

-Replaced forked http-signature dependency with official package (#876)

changes/changelog.d/listenbrainz.enhancement

-Added a ListenBrainz plugin to submit listenings
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changes/changelog.d/plugins.bugfix

-Fixed an issue that prevented disabling plugins
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changes/changelog.d/podcastssearch.enhancement

-Added new search functions to allow users to more easily search for podcasts in the UI.
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