DEV: Bump message_bus from 3.0.0 to 3.1.0 (#9565)

Bumps [message_bus](https://github.com/SamSaffron/message_bus) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/SamSaffron/message_bus/releases)
- [Changelog](https://github.com/discourse/message_bus/blob/master/CHANGELOG)
- [Commits](https://github.com/SamSaffron/message_bus/compare/v3.0.0...v3.1.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Very safe change introduces new API needed for message filtering. 

7fad5a3e7d

Gemfile.lock

@@ -184,7 +184,7 @@ GEM
       mini_mime (>= 0.1.1)
     maxminddb (0.1.22)
     memory_profiler (0.9.14)
-    message_bus (3.0.0)
+    message_bus (3.1.0)
       rack (>= 1.1.3)
     method_source (0.9.2)
     mini_mime (1.0.2)