move to codeberg

Closes: https://todo.sr.ht/~nicoco/matteridge/1

chore: bump slidge core

build: bump alpine to 3.20

chore: update poetry.lock

chore: update to slidge v0.2.0alpha3

chore: update poetry.lock

build: pin slidge ~0.1

chore: update poetry.lock

build: pin slidge 0.1.2

fix: re-login when token expires

I want to believe this time for good.

ci: add gcc and python headers

fix: various expired token issues

There are probably others left to fix,
but this seems quite better

fix: dict changed during iteration

since we await in the list comp, sometimes
this error can be raised

fix: multi-user usage

Our cache was poorly designed, and broke
in a multi-user context…

chore: update poetry.lock

build: pin slidge 0.1.0

chore: update poetry.lock

feat: prompt for new token when session expires

fix: websocket: do not write to close/closing transport

Not sure why we need that now, probably bad
test and/or aiohttp behaviour change?

docs: fix broken link