Update main.yml

Author: RaXorX

.github/workflows/main.yml

@@ -20,4 +20,4 @@ jobs:
         vs-version: '15.0'
 
     - name: Build Release (x86)
-      run: msbuild HWFW_GUI.sln /p:Configuration=Release /p:Platform=x86
+      run: msbuild HWFW_GUI.sln /p:Configuration=Release /p:Platform=x86 /p:PlatformToolset=v142