Update main.yml

.github/workflows/main.yml

@@ -26,6 +26,9 @@ jobs:
     - name: Install NuGet Packages
       run: nuget restore ChangeTimestamp\ChangeTimestamp.sln
       
+    - name: Build solution
+      run: msbuild -nologo -v:m -p:Configuration=${{ matrix.configuration }} ChangeTimestamp\ChangeTimestamp.csproj
+      
     - name: Install 7Zip PowerShell Module
       shell: powershell
       run: Install-Module 7Zip4PowerShell -Force -Verbose