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](actions/checkout@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>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -69,7 +69,7 @@ jobs:
         psql --version
         Write-Host "Active .NET SDK: $(dotnet --version)"
     - name: Git checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Restore tools
       run: |
         dotnet tool restore
@@ -160,7 +160,7 @@ jobs:
       contents: read
     steps:
     - name: Git checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
       with:
@@ -211,7 +211,7 @@ jobs:
       contents: read
     steps:
     - name: Git checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 2
     - name: Setup .NET

.github/workflows/qodana.yml

@@ -17,7 +17,7 @@ jobs:
       pull-requests: write
       checks: write
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         pr-mode: false # workaround for bug: job fails on PR (without writing logs) when no source files have changed
         ref: ${{ github.event.pull_request.head.sha }}  # to check out the actual pull request commit, not the merge commit