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] <[email protected]>

.github/workflows/automerge.yml

@@ -20,7 +20,7 @@ jobs:
       issues: write
     steps:
       - name: Clone repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Fetch Dependabot metadata
         id: metadata

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
       packages: read
     steps:
       - name: Clone repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v3
@@ -63,7 +63,7 @@ jobs:
       packages: write
     steps:
       - name: Clone repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v2
@@ -138,7 +138,7 @@ jobs:
       contents: write
     steps:
       - name: Clone repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Download build artifact
         uses: actions/download-artifact@v3

.github/workflows/codeql.yml

@@ -20,7 +20,7 @@ jobs:
       security-events: write
     steps:
       - name: Clone repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2