Update microsoft/setup-msbuild action to v3

Author: renovate[bot]

.github/workflows/BuildOnly.yml

@@ -25,7 +25,7 @@ jobs:
             8.0.x
 
     - name: Add MSBuild to PATH
-      uses: microsoft/setup-msbuild@v2.0.0
+      uses: microsoft/setup-msbuild@v3.0.0
       with:
         vs-prerelease: true
 

.github/workflows/dotnet.yml

@@ -29,7 +29,7 @@ jobs:
             8.0.x
 
     - name: Add MSBuild to PATH
-      uses: microsoft/setup-msbuild@v2.0.0
+      uses: microsoft/setup-msbuild@v3.0.0
       with:
         vs-prerelease: true