Install .NET 9 GA

Author: pjcollins

.github/workflows/build.yml

@@ -15,19 +15,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Use .NET 9.x
+      - name: Use .NET 9.0.x
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '9.x'
-          dotnet-quality: 'preview'
-
-      # Temporarily install newer runtime for iOS binding projects
-      - name: Install .NET 9 RTM runtime
-        run: >
-          DOTNET_ROOT=~/.dotnet/ &&
-          curl -L https://dot.net/v1/dotnet-install.sh --retry 5 --retry-max-time 300 > dotnet-install.sh &&
-          chmod +x dotnet-install.sh &&
-          ./dotnet-install.sh -c 9.0 -q daily --runtime dotnet
+          dotnet-version: 9.0.x
 
       - name: Install JDK 17
         uses: actions/setup-java@v4