build(deps): Bump actions/checkout from 2.3.5 to 2.4.0 (#443)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.5 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@v2.3.5...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>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Marko <marbar3778@yahoo.com>

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
   Test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - name: test & coverage report creation
         # Some tests, notably TestRandomOperations, are extremely slow in CI
         # with the race detector enabled, so we use -short when -race is

.github/workflows/docker.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/setup-go@v2
         with:
           go-version: "^1.15.4"
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - name: Prepare
         id: prep
         run: |

.github/workflows/lint.yml

@@ -8,7 +8,7 @@ jobs:
   golangci-lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - uses: golangci/golangci-lint-action@v2.5.2
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.github/workflows/proto.yml

@@ -10,13 +10,13 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 4
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - name: lint
         run: make proto-lint
   proto-breakage:
     runs-on: ubuntu-latest
     timeout-minutes: 4
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - name: check-breakage
         run: make proto-check-breaking