build(deps): bump actions/checkout from 3.5.2 to 4.0.0 (#217)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.2 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.5.2...v4.0.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v3.5.2
+        uses: actions/checkout@v4.0.0
       - name: Run YAML Lint
         uses: ibiqlik/action-yamllint@v3.1
         with:
@@ -45,7 +45,7 @@ jobs:
           - ubuntu-22.04
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v3.5.2
+        uses: actions/checkout@v4.0.0
       - name: Start Streamr Docker Stack
         # TODO the entry-point service is temporarily disabled as broker images are not yet built from streamr-1.0 branch
         run: ./streamr-docker-dev/bin.sh start --wait --timeout 600 --except entry-point