Update dotnetcore.yml

Author: usercode

.github/workflows/dotnetcore.yml

@@ -13,7 +13,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     - name: Build with dotnet
       run: dotnet build --configuration Release "./src/ImageWizard.sln"
     - name: Run unit tests
@@ -48,4 +48,4 @@ jobs:
       run: dotnet nuget push "./src/ImageWizard.PuppeteerSharp/bin/Release/*.nupkg" -s "https://api.nuget.org/v3/index.json" -k ${{secrets.NUGET_API_KEY}}    
     - name: Publish "ImageWizard.Generator" to nuget
       run: dotnet nuget push "./src/ImageWizard.Generator/bin/Release/*.nupkg" -s "https://api.nuget.org/v3/index.json" -k ${{secrets.NUGET_API_KEY}}    
-    
+