Mastodon versions 4.5.6, 4.4.13, and 4.3.19 released

We just released Mastodon 4.5.6, 4.4.13, and 4.3.19.

These versions contain various bug fixes, including a fix for a moderate security vulnerability.

Full release notes and update instructions are available on the GitHub releases page.

https://github.com/mastodon/mastodon/releases

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