Update workflows in line with framework changes

.github/workflows/ci.yml

@@ -132,8 +132,8 @@ jobs:
         with:
           dotnet-version: "6.0.x"
 
-      # Contrary to seemingly any other msbuild, msbuild running on macOS/Mono
-      # cannot accept .sln(f) files as arguments.
-      # Build just the main game for now.
+      - name: Install .NET Workloads
+        run: dotnet workload install maui-ios
+
       - name: Build
-        run: msbuild osu.iOS/osu.iOS.csproj /restore /p:Configuration=Debug
+        run: dotnet build -c Debug osu.iOS

appveyor.yml

@@ -1,6 +1,6 @@
 clone_depth: 1
 version: '{branch}-{build}'
-image: Visual Studio 2019
+image: Visual Studio 2022
 cache:
   - '%LOCALAPPDATA%\NuGet\v3-cache -> appveyor.yml'
 
@@ -11,6 +11,7 @@ dotnet_csproj:
 
 before_build:
   - cmd: dotnet --info # Useful when version mismatch between CI and local
+  - cmd: dotnet workload install maui-ios # Change to `dotnet workload restore` once there's no old projects
   - cmd: nuget restore -verbosity quiet # Only nuget.exe knows both new (.NET Core) and old (Xamarin) projects
 
 build: