Update build.yml

Author: aritchie

.github/workflows/build.yml

@@ -37,6 +37,9 @@ jobs:
       with:
           dotnet-version: '10.0.x'
 
+    - name: Add .NET Workloads
+      run: dotnet workload install maui-ios maui-android
+      
     - name: Build
       run: dotnet build Shiny.Spatial.slnx /restore -m -property:Configuration=Release