typing: Stop ignoring 'fixtures'

This is now typed.

Signed-off-by: Stephen Finucane <stephen@that.guru>

Author: stephenfin

pyproject.toml

@@ -63,7 +63,6 @@ check_untyped_defs = true
 
 [[tool.mypy.overrides]]
 module = [
-    "fixtures.*",
     "testresources.*",
     "testscenarios.*",
 ]