Bump OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml

Bumps the actions group with 1 update in the /.github/workflows directory: [OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml](https://github.com/openastronomy/github-actions-workflows).


Updates `OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml` from 2.1.0 to 2.3.0
- [Release notes](https://github.com/openastronomy/github-actions-workflows/releases)
- [Commits](OpenAstronomy/github-actions-workflows@8682314...d9b81a0)

---
updated-dependencies:
- dependency-name: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml
  dependency-version: 2.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
...

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

Author: dependabot[bot]

.github/workflows/integration_testing.yml

@@ -15,7 +15,7 @@ permissions:
 # It is up to the individual packages to do detailed testing with astropy RC.
 jobs:
   test:
-    uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@86823142467dd2afcd1bbac57d3a664cf468eb3b  # v2.1.0
+    uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@d9b81a07e789d1b1921ab5fe33de2ddcbbd02c3f  # v2.3.0
     with:
       submodules: false
       envs: |