actions: bump actions/checkout from 2.3.3 to 2.3.4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.3 to 2.3.4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.3.3...v2.3.4)

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

.github/workflows/build.yml

@@ -32,7 +32,7 @@ jobs:
           go-version: ${{ matrix.go_version }}
         id: go
       - name: Check out code
-        uses: actions/checkout@v2.3.3
+        uses: actions/checkout@v2.3.4
       - name: Go mod verify
         run: go mod verify
       - name: Go vet normally

.github/workflows/test.yml

@@ -31,7 +31,7 @@ jobs:
           go-version: ${{ matrix.go_version }}
         id: go
       - name: Check out code
-        uses: actions/checkout@v2.3.3
+        uses: actions/checkout@v2.3.4
       - name: Go Test
         run: |
           go test -timeout 5m -race -v -covermode=atomic -coverprofile=coverage.out ./...
@@ -46,7 +46,7 @@ jobs:
     name: StaticCheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.3
+      - uses: actions/checkout@v2.3.4
       - name: check
         uses: grandcolline/golang-github-actions@v1.1.0
         with:
@@ -57,7 +57,7 @@ jobs:
     name: Go Vet with Shadow
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.3
+      - uses: actions/checkout@v2.3.4
       - name: check
         uses: grandcolline/golang-github-actions@v1.1.0
         with: