Mbin release v1.7.4

Mbin released a new version: Mbin v1.7.4.

This is the v1.7.4 release of Mbin and it brings a lot of documentation updates and bug fixes (especially in the backend): documentation for the Nginx setup has been altered a lot (allowing you to rate limit on Nginx level), PostgreSQL has also seen a few edits, most Symfony commands are now documented, we improved the federation backend, we "revive" dead instances when we get activities from them, the search experience is now improved when searching for URLs, we now support strike through HTML to markdown and a lot more.

The most important thing for developers is that the automated tests are now working and required for PRs to be merged.

Again, see full release note at: https://github.com/MbinOrg/mbin/releases/tag/v1.7.4

Thank you!