chore(deps): bump actions/checkout from 2 to 3

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](actions/checkout@v2...v3)

---
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/clang-tidy-pr-comments.yaml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Download analysis results
         run: |
@@ -29,7 +29,7 @@ jobs:
           echo ::set-output name=pr-head-ref::"$(cat /tmp/clang-tidy-result/pr-head-ref.txt)"
 
       - name: Check out PR head
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: ${{ steps.set-variables.outputs.pr-head-repo }}
           ref: ${{ steps.set-variables.outputs.pr-head-ref }}