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/check-for-build-warnings.yml

@@ -13,7 +13,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 

.github/workflows/clean-repo.yml

@@ -14,7 +14,7 @@ jobs:
       pull-requests: write
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v4
 
       # Call clean repo
       - name: Clean repo

.github/workflows/dependabot-bot.yml

@@ -22,7 +22,7 @@ jobs:
 
     # Checkout the repo into the workspace within the VM
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v4
       # - name: Setup .NET
       #   uses: actions/setup-dotnet@4d4a70f4a5b2a5a5329f13be4ac933f2c9206ac0
       #   with:

.github/workflows/markdownlint.yml

@@ -23,7 +23,7 @@ jobs:
       statuses: write
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@8f152de45cc393bb48ce5d89d36b731f54556e65
         with:

.github/workflows/merge-main-to-live.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout main branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: main
 

.github/workflows/snippets5000.yml

@@ -32,7 +32,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v4.1.1 #@v3.1.0
+      - uses: actions/checkout@v4 #@v3.1.0
 
       # Get the latest preview SDK (or sdk not installed by the runner)
       - name: Setup .NET SDK