* Allow unused ignores in "bleeding edge" CI
Where "bleeding edge" means the Twisted Trunk and Latest Deps jobs.
Follow up from #12531.
Resolves#12574.
* Use `--extras all` in latest deps mypy CI
Twisted trunk job already does this.
Missed in #12531.
* changelog
This reverts commit 5a320baa45b8e826e52bdd6cadadfad727ab0357.
This reverts commit f282d5fc1185dde3f9ec31c49b630cff962545d7.
This reverts commit ce6ecdd4b4939fd99418bc949b40c01d39480489.