Bump kurtmckee/github-workflows in the github-actions group

Bumps the github-actions group with 1 update: [kurtmckee/github-workflows](https://github.com/kurtmckee/github-workflows).


Updates `kurtmckee/github-workflows` from 0.2 to 0.4
- [Release notes](https://github.com/kurtmckee/github-workflows/releases)
- [Changelog](https://github.com/kurtmckee/github-workflows/blob/main/CHANGELOG.rst)
- [Commits](kurtmckee/github-workflows@7302439...420931a)

---
updated-dependencies:
- dependency-name: kurtmckee/github-workflows
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/test.yaml

@@ -42,6 +42,6 @@ jobs:
             paths:
               - ".mypy_cache/"
 
-    uses: "kurtmckee/github-workflows/.github/workflows/tox.yaml@73024397dba10c866931a1d26cc2a0e7d223472f" # v0.2
+    uses: "kurtmckee/github-workflows/.github/workflows/tox.yaml@420931a88d3f09ca8dbce4778d145ed610c231e0" # v0.4
     with:
       config: "${{ toJSON(matrix) }}"