Bump actions/checkout from 2.3.5 to 2.4.0

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] <[email protected]>

.github/workflows/create-release.yml

@@ -11,7 +11,7 @@ jobs:
     name: Release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
         with:
           fetch-depth: 0
       - name: Get latest release tag

.github/workflows/security-tests.yml

@@ -14,7 +14,7 @@ jobs:
     name: Snyk
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
         with:
           ref: ${{ github.ref }}
       - uses: snyk/actions/node@master
@@ -29,7 +29,7 @@ jobs:
         language: ['javascript']
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v1
         with:

.github/workflows/unit-tests.yml

@@ -24,7 +24,7 @@ jobs:
       SIGHTENGINE_API_USER: ${{ secrets.SIGHTENGINE_API_USER }}
       SIGHTENGINE_API_SECRET: ${{ secrets.SIGHTENGINE_API_SECRET }}
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - name: Cache node_modules
         id: cache
         uses: actions/[email protected]

.github/workflows/yaml-lint.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 3
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - uses: ibiqlik/[email protected]
         with:
           config_file: .yamllint.yml