Bump actions/setup-python

Bumps the catch-all group in /.github/actions/rancher with 1 update: [actions/setup-python](https://github.com/actions/setup-python).


Updates `actions/setup-python` from 5.3.0 to 5.4.0
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@0b93645...4237552)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: catch-all
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/actions/rancher/action.yml

@@ -30,7 +30,7 @@ runs:
   steps:
     - uses: azure/setup-kubectl@3e0aec4d80787158d308d7b364cb1b702e7feb7f # v4.0.0
     - name: setup-python
-      uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
+      uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
       with:
         python-version: "3.9"
         cache: pip