Update dotnet.yml

.github/workflows/dotnet.yml

@@ -2,17 +2,29 @@ name: .NET
 
 on:
   push:
-    branches: [ master ]
+    branches: [master]
   pull_request:
-    branches: [ master ]
+    branches: [master]
 
 jobs:
   build:
     name: Setup Xamarin and Mono versions
     runs-on: macos-latest
     steps:
-    - name: setup-xamarin
-      uses: maxim-lobanov/setup-xamarin@v1
-      with:
-        mono-version: '6.12' # specify version in '<major>.<minor>' format
-        xamarin-android-version: '12.0.0.3' # specify full version; it is not recomended option because your pipeline can be broken suddenly in future
+      - name: Install Mono
+        run: brew install mono
+        # You can replace 'brew install mono' with the appropriate installation method for Mono on macOS.
+
+      - name: Install Xamarin.Android
+        run: brew install --cask xamarin-android
+        # Replace with the correct installation command for Xamarin.Android.
+
+      - name: Set Xamarin.iOS version
+        run: sudo $AGENT_HOMEDIRECTORY/scripts/select-xamarin-sdk.sh 13.0.0.47
+        # Replace '13.0.0.47' with the desired Xamarin.iOS version.
+
+      - name: Set Xamarin.Mac version
+        run: sudo $AGENT_HOMEDIRECTORY/scripts/select-xamarin-sdk.sh 6.12.0.140
+        # Replace '6.12.0.140' with the desired Xamarin.Mac version.
+
+      # Add your build and test steps here