chore: upgrade msbuild setup

Author: Christoph Bühler

.github/workflows/github-pages.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           dotnet-version: 5.0.100
       - name: Setup MS Build
-        uses: microsoft/[email protected].1
+        uses: microsoft/[email protected].2
       - name: Install DocFX
         uses: crazy-max/ghaction-chocolatey@v1
         with: