Update changelog

CHANGELOG.md

@@ -22,6 +22,7 @@
 - Update StatusTagsPipeline, fix object tags and slug normalization ([d295e605](https://github.com/pixelfed/pixelfed/commit/d295e605))
 - Update Note and CreateNote transformers, include attachment blurhash, width and height ([ce1afe27](https://github.com/pixelfed/pixelfed/commit/ce1afe27))
 - Update ap helpers, store media attachment width and height if present ([8c969191](https://github.com/pixelfed/pixelfed/commit/8c969191))
+- Update Sign-in with Mastodon, allow usage when registrations are closed ([895dc4fa](https://github.com/pixelfed/pixelfed/commit/895dc4fa))
 -  ([](https://github.com/pixelfed/pixelfed/commit/))
 
 ## [v0.11.9 (2023-08-21)](https://github.com/pixelfed/pixelfed/compare/v0.11.8...v0.11.9)