ci: bump actions/checkout from 4 to 7 (#8)

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'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
     name: ruff
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-python@v5
         with:
           python-version: '3.13'
@@ -47,7 +47,7 @@ jobs:
         python: ['3.11', '3.13']
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v5
         with:

.github/workflows/codeql.yml

@@ -33,7 +33,7 @@ jobs:
         language: [python, javascript-typescript]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: initialize
         uses: github/codeql-action/init@v3

.github/workflows/pages.yml

@@ -40,7 +40,7 @@ jobs:
       url: ${{ steps.deploy.outputs.page_url }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Check the demo was built
         run: |