Bump actions/checkout from 2 to 3 (#15)

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] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Vishal <vishalpachpinde1@gmail.com>

Author: dependabot[bot]

.github/workflows/sanitycheck.yml

@@ -28,7 +28,7 @@ jobs:
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     steps:
       - name: Checkout code # checking our the code at current commit that triggers the workflow
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Cache dependency # caching dependency will make our build faster.
         uses: actions/cache@v2 # for more info checkout pip section documentation at https://github.com/actions/cache
         with: