Bump nuget/setup-nuget from 1 to 2

Bumps [nuget/setup-nuget](https://github.com/nuget/setup-nuget) from 1 to 2.
- [Release notes](https://github.com/nuget/setup-nuget/releases)
- [Commits](NuGet/setup-nuget@v1...v2)

---
updated-dependencies:
- dependency-name: nuget/setup-nuget
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/publish-csharp-apidocs.yml

@@ -37,7 +37,7 @@ jobs:
         wget https://github.com/dotnet/docfx/releases/download/v${DOCFXVERSION}/docfx-linux-x64-v${DOCFXVERSION}.zip -O build/docfx/docfx.zip
         unzip build/docfx/docfx.zip -d build/docfx
     - name: Install NuGet
-      uses: nuget/setup-nuget@v1
+      uses: nuget/setup-nuget@v2
     - name: Build Documentation
       run: |
         build/docfx/docfx metadata csharp/ApiDocs/docfx.json