Bump actions/setup-dotnet from 4 to 5 (#73)

Author: dependabot[bot]

.github/workflows/msbuild.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: 8.0.x