Bump actions/checkout from 4 to 5 (#2019)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -31,7 +31,7 @@ jobs:
           --user
           tox
       - name: Check out src from Git
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # needed by setuptools-scm
       - name: Build dists

.github/workflows/tox.yml

@@ -51,7 +51,7 @@ jobs:
       matrix: ${{ fromJson(needs.pre.outputs.matrix) }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0 # needed by setuptools-scm
 
@@ -142,7 +142,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       # checkout needed for codecov action which needs codecov.yml file
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v5