Add Interlingue to available_locales (Dhghomon)
https://github.com/mastodon/mastodon/pull/28630

Rename Panjabi to Punjabi (gunchleoc)
https://github.com/mastodon/mastodon/pull/27117

Add Vai to posting languages (gunchleoc)
https://github.com/mastodon/mastodon/pull/27136

Add Kashubian to languages dropdown (McKristoffer)
https://github.com/mastodon/mastodon/pull/26024

Add Pennsylvania Dutch to languages dropdown (HelgeKrueger)
https://github.com/mastodon/mastodon/pull/26634

Convert more API specs from controller->request style (mjankowski)
https://github.com/mastodon/mastodon/pull/29004

Improve `IpBlock` model test coverage (danielmbrasil)
https://github.com/mastodon/mastodon/pull/29460

Add attribution to Tabler.io icons used in the new mailer designs (ClearlyClaire)
https://github.com/mastodon/mastodon/pull/29470

New welcome email (hteumeuleu)
https://github.com/mastodon/mastodon/pull/28883

Move `nobody` position in `UserRole` magic number to constant (mjankowski)
https://github.com/mastodon/mastodon/pull/29465

Fix regression in handling `select` elements in `packs/admin.tsx` (ClearlyClaire)
https://github.com/mastodon/mastodon/pull/29469

Disable codecov comments on PRs (mjankowski)
https://github.com/mastodon/mastodon/pull/29464

Update dependency express to v4.18.3 (renovate[bot])
https://github.com/mastodon/mastodon/pull/29458

Convert `packs/admin.jsx` to Typescript (renchap)
https://github.com/mastodon/mastodon/pull/29425