Review differences between matrix-org-hotfixes and release branch

[DMRobertson]

CI currently fails with a mypy error on the hotfixes branch. This made me wonder how different hotfixes are to our release candidates.

We should review these changes. At the very least, I would like to have a reference for the differences between hotfixes and the release branch.

$ git diff --stat matrix-org-hotfixes..v1.52.0rc1 
   changelog.d/11583.bugfix                     |  1 -
   synapse/handlers/message.py                  |  2 +-
   synapse/handlers/room_member.py              | 56 ++++++++++++++++++--------------------------------------
   synapse/push/httppusher.py                   |  5 -----
   synapse/storage/database.py                  | 40 +---------------------------------------
   synapse/storage/databases/main/client_ips.py |  2 +-
   synapse/storage/databases/main/search.py     |  2 +-

[richvdh]

dup #4826 I think...

(the diff is pretty small nowadays, and I would love for us to finish cleaning that up)

[DMRobertson]

Ahh yes. Sorry, I should search before I file.