Bump actions/checkout from 4 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/with-defaults.yml

@@ -30,7 +30,7 @@ jobs:
     name: A job to deploy devstack with defaults
     steps:
       - name: Checkout devstack-action
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
       - name: Deploy devstack
         uses: ./
         with:

action.yaml

@@ -49,7 +49,7 @@ runs:
       run: sudo apt-get purge -y python3-simplejson python3-pyasn1-modules postgresql* || true
       shell: bash
     - name: Checkout Devstack
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
       with:
         ref: ${{ inputs.branch }}
         repository: openstack/devstack