Bump actions/checkout from 3.6.0 to 4.0.0 (#803)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.6.0 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@f43a0e5...3df4ab1)

---
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.yaml

@@ -66,7 +66,7 @@ jobs:
           echo "$HOME/gotip/bin:$PATH" >> $GITHUB_PATH
 
       - name: Checkout the repo
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           path: ${{ env.WORKING_DIR }}
 
@@ -126,7 +126,7 @@ jobs:
           echo "$HOME/gotip/bin" >> $GITHUB_PATH
 
       - name: Checkout the repo
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           path: ${{ env.WORKING_DIR }}
 
@@ -168,7 +168,7 @@ jobs:
           go-version: ${{ matrix.go }}
 
       - name: Checkout the repo
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           path: ${{ env.WORKING_DIR }}