Bump version to v4.1.21 (mastodon#33138)

Co-authored-by: David Roetzel <david@roetzel.de>

Bump version to v4.3.1 (mastodon#32582)

Co-authored-by: David Roetzel <david@roetzel.de>

New Crowdin Translations for stable-4.3 (automated) (mastodon#32297)

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Bump version to 4.3.0-rc.1 (mastodon#32124)

Bump version to 4.2.13

Bump version to v4.1.20

Bump version to 4.3.0-beta.2 (mastodon#31948)

Bump version to v4.3.0-beta.1 (mastodon#30989)

Bump version to v4.2.12 (mastodon#31491)