Bump actions/checkout from 2 to 3 (#6)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  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>

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: "ubuntu-latest"
     name: Check code quality
     steps:
-      - uses: "actions/checkout@v2"
+      - uses: "actions/checkout@v3"
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         id: python
         uses: actions/setup-python@v3.1.1
@@ -33,7 +33,7 @@ jobs:
     runs-on: "ubuntu-latest"
     name: Run tests
     steps:
-      - uses: "actions/checkout@v2"
+      - uses: "actions/checkout@v3"
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         id: python
         uses: actions/setup-python@v3.1.1
@@ -60,7 +60,7 @@ jobs:
       - tests
     steps:
       - name: checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Get tag name
         shell: bash