Bump actions/checkout from 6 to 7 in the gha group

Bumps the gha group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 6 to 7
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: gha
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
         python-version: [3.9, "3.10", "3.11", "3.12"]
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/setup-python@v6
       with:
         python-version: '3.12'