Fix flake8#303

trexfeathers merged 3 commits intoSciTools:pre-commit-ci-update-configSciTools/iris-esmf-regrid:pre-commit-ci-update-configfrom

stephenworsley:pre-commit-ci-update-config_fixstephenworsley/iris-esmf-regrid:pre-commit-ci-update-config_fixCopy head branch name to clipboard