chore(deps): bump actions/checkout from 2 to 2.3.4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 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...v2.3.4)

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

.github/workflows/go.yml

@@ -29,7 +29,7 @@ jobs:
   #docker-build:
   #  runs-on: ubuntu-latest
   #  steps:
-  #    - uses: actions/checkout@v2
+  #    - uses: actions/checkout@v2.3.4
   #    - name: Build the Docker image
   #      run: docker build . --file Dockerfile
   #goreleaser:
@@ -58,7 +58,7 @@ jobs:
   golangci-lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v2.5.2
         with:
@@ -79,7 +79,7 @@ jobs:
           #- 1.14.7
           - 1.15.1
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: Install Go
         uses: actions/setup-go@v2
         with:
@@ -98,7 +98,7 @@ jobs:
       OS: macos-latest
       GOLANG: ${{ matrix.golang }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: Install Go
         uses: actions/setup-go@v2
         with:
@@ -142,7 +142,7 @@ jobs:
       OS: ubuntu-latest
       GOLANG: ${{ matrix.golang }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: Install Go
         uses: actions/setup-go@v2
         with:

.github/workflows/pr.yml

@@ -11,7 +11,7 @@ jobs:
     name: Release-Notes Preview
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v2.3.4
     - run: |
         git fetch --prune --unshallow --tags
     - uses: snyk/release-notes-preview@v1.6.2

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@master
+        uses: actions/checkout@v2.3.4
       -
         name: Unshallow
         run: git fetch --prune --unshallow