Bump actions/checkout from 2.3.4 to 2.4.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.4 to 2.4.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.3.4...v2.4.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -16,7 +16,7 @@ jobs:
           go-version: 1.16
         id: go
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v2.4.0
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2.8.1
         with:
@@ -49,7 +49,7 @@ jobs:
           go-version: 1.16
         id: go
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v2.4.0
       - name: Test
         run: |
           go test ./... -coverprofile coverage.out

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v2.4.0
       - name: Unshallow
         run: git fetch --prune --unshallow
       - name: Set up Go