chore(deps): bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci-py.yml

@@ -27,7 +27,7 @@ jobs:
     outputs:
       python: ${{ github.ref_name == github.event.repository.default_branch || steps.filter.outputs.python }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dorny/paths-filter@v3
       id: filter
       with:
@@ -49,7 +49,7 @@ jobs:
         python-version: ['3.10']
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run sccache-cache
         uses: mozilla-actions/[email protected]
       - name: Install poetry
@@ -82,7 +82,7 @@ jobs:
     name: Check serialization schema
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run sccache-cache
         uses: mozilla-actions/[email protected]
       - name: Install poetry

.github/workflows/ci-rs.yml

@@ -33,7 +33,7 @@ jobs:
     outputs:
       rust: ${{ github.ref_name == github.event.repository.default_branch || steps.filter.outputs.rust }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dorny/paths-filter@v3
       id: filter
       with: