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/publish-nuget.yml

@@ -1,4 +1,4 @@
-# This GitHub Action simply builds, packs and publishes the package to Nuget.org
+# This GitHub Action simply builds, packs and publishes the package to Nuget.org
 # You will need to manually trigger it.
 # by @geoperez and @mariodivece
 name: Pack and Publish to Nuget.org
@@ -13,7 +13,7 @@ jobs:
       NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}
     steps:
     - name: 🚕 Checkout codebase
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 🏗 Build, Pack and Publish to Nuget.org
       run: |
         dotnet pack ${{ env.PROJECT_FILE_PATH }} --configuration Release -p:IncludeSymbols=true -p:SymbolPackageFormat=snupkg