chore(deps): bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v3...v4)

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

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

.github/workflows/build.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:

.github/workflows/conflicts.yml

@@ -6,7 +6,7 @@ jobs:
   detect-unresolved-conflicts:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: List files with merge conflict markers
         # Encode conflict markers so this file does not trigger git's conflict detection.
         run: git --no-pager grep "$(echo 'PDw8PDw8PAo=' | base64 -d)" ":(exclude).github/" || true

.github/workflows/e2e_cron.yml

@@ -18,7 +18,7 @@ jobs:
     timeout-minutes: 60
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20.11

.github/workflows/e2e_pr.yml

@@ -29,7 +29,7 @@ jobs:
         - 5432:5432
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20.11

.github/workflows/reference_linter.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Python 3
         uses: actions/setup-python@v5
         with:

.github/workflows/unittests.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v4
         with: