feat: support for .net 9.0.

.github/workflows/push-to-myget.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Setup .NET Core SDK
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '8.0.x'
+          dotnet-version: '9.0.x'
 
       - name: setup nuget.exe
         uses: NuGet/setup-nuget@v1.0.5
@@ -24,7 +24,7 @@ jobs:
         run: |
           cd build
           .\build.ps1
-          nuget pack build-for-myget.nuspec -version 3.5.0-beta.${env:GITHUB_RUN_NUMBER}
+          nuget pack build-for-myget.nuspec -version 3.7.0-beta.${env:GITHUB_RUN_NUMBER}
           $nupkgName = @(gci *.nupkg)[0].Name
           $mygetSourcePath = "https://www.myget.org/F/handycontrol"
           nuget setApiKey ${{ secrets.MYGETTOKEN }} -Source $mygetSourcePath