Bump actions/checkout from 3.5.2 to 3.6.0 (#106)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.2 to 3.6.0.
- [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/8e5e7e5ab8b370d6c329ec480221332ada57f0ab...f43a0e5ff2bd294095638e18286ca9a3d1956744)

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

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

.github/workflows/build.yaml

diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index e5c15dd..863903c 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -15,7 +15,7 @@
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab
+    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
     - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
     - uses: nanasess/setup-chromedriver@2c49495f83dd47aa7cee6b3d20cd5a5a3e1e016d