Updated build for net9

Author: DarthAffe

.github/workflows/release.yml

@@ -21,7 +21,9 @@ jobs:
     - name: Install .NET Core
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: |
+          9.0.x
+          8.0.x
         
     - name: Restore dependencies
       run: dotnet restore StableDiffusion.NET
@@ -47,7 +49,7 @@ jobs:
       with:
         tag_name: ${{ github.event.inputs.version }}
         generate_release_notes: true
-        files: StableDiffusion.NET/bin/Release/net8.0/StableDiffusion.NET.dll
+        files: StableDiffusion.NET/bin/Release/net9.0/StableDiffusion.NET.dll
 
     - name: Nuget Push
       id: nuget_push