build(deps): bump actions/checkout from 2.3.5 to 2.4.0 (#1267)

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]>

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

Author: dependabot[bot]

.github/workflows/ci-kotlin.yml

@@ -30,7 +30,7 @@ jobs:
           - 3306:3306
 
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - uses: actions/setup-java@v2
         with:
           distribution: 'adopt'

.github/workflows/ci-python.yml

@@ -23,7 +23,7 @@ jobs:
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
 
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
       - uses: actions/setup-python@v2
         with:
           python-version: 3.9

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
         - 3306:3306
 
     steps:
-    - uses: actions/checkout@v2.3.5
+    - uses: actions/checkout@v2.4.0
 
     - uses: actions/setup-go@v2
       with:

.github/workflows/docker.yml

@@ -12,7 +12,7 @@ jobs:
       id: prep
       run: |
         echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
-    - uses: actions/checkout@v2.3.5
+    - uses: actions/checkout@v2.4.0
     - uses: docker/setup-buildx-action@v1
     - uses: docker/setup-qemu-action@v1
     - uses: docker/[email protected]