Bump actions/checkout from 3.5.2 to 3.5.3 (#26)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.2 to 3.5.3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.5.2...v3.5.3)

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

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

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     name: Flake8
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.5.2
+      - uses: actions/checkout@v3.5.3
       - name: Set Up Python
         uses: actions/setup-python@v4.7.0
         with:
@@ -42,7 +42,7 @@ jobs:
           - 'pypy-3.8'
           - 'pypy-3.9'
     steps:
-      - uses: actions/checkout@v3.5.2
+      - uses: actions/checkout@v3.5.3
       - name: Set Up Python
         uses: actions/setup-python@v4.7.0
         with:
@@ -64,7 +64,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v3.5.2
+        uses: actions/checkout@v3.5.3
         with:
           fetch-depth: 0
       - name: Set Up Python