Bump frabert/replace-string-action from 2.3 to 2.4 (#653)

Bumps [frabert/replace-string-action](https://github.com/frabert/replace-string-action) from 2.3 to 2.4.
- [Release notes](https://github.com/frabert/replace-string-action/releases)
- [Commits](frabert/replace-string-action@v2.3...v2.4)

---
updated-dependencies:
- dependency-name: frabert/replace-string-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/test.yml

@@ -28,7 +28,7 @@ jobs:
       run: python -m pip install --upgrade pip tox
     - name: Format Python version for tox
       id: py_tox_version
-      uses: frabert/replace-string-action@v2.3
+      uses: frabert/replace-string-action@v2.4
       with:
         pattern: '(\d)\.(\d)'
         string: ${{ matrix.python-version }}