fix(ci): ignore RUF067 rule and fix mypy typing error

Author: NicolasLafitteMM

pyproject.toml

@@ -531,6 +531,7 @@ ignore = [
   "FIX003",  # XXX: Enable later - Too many X*X
   "FIX002",  # XXX: Enable later - Too many T0D0s
   "RUF012",  # XXX Enable later - Mutable class attributes should be annotated with `typing.ClassVar`
+  "RUF067",  # __init__ module should only contain docstrings and re-exports
   "CPY001",  # Missing copyright notice at top of file
   "PLR6301", # XXX Method could be a function or static method -- needs allow list or @override support
   "E203",    # XXX whitespace-before-punctuation -- still unstable with black formatting

src/firefighter/incidents/tasks/updateoncall.py

@@ -34,7 +34,7 @@ def update_oncall() -> None:
         fetch_oncalls.s()  # pyright: ignore[reportUnboundVariable]
         | update_oncall_views.s()
     )
-    chain()
+    chain.apply_async()
 
 
 @shared_task(name="incidents.update_oncall_views")