Update push-to-myget.yml

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

@@ -7,6 +7,12 @@ jobs:
       - name: checkout
         uses: actions/checkout@master
         
+      - name: Setup .NET Core SDK
+        uses: actions/setup-dotnet@master
+        with:
+          dotnet-version: '6.0.x'
+          include-prerelease: true
+        
       - name: setup nuget.exe
         uses: NuGet/setup-nuget@v1.0.5
       
@@ -15,7 +21,7 @@ jobs:
         run: |
           cd build
           .\build.ps1
-          nuget pack build-for-myget.nuspec -version 3.4.0-beta.${env:GITHUB_SHA::7}
+          nuget pack build-for-myget.nuspec -version 3.4.0-beta.${env:GITHUB_RUN_NUMBER}
           $nupkgName = @(gci *.nupkg)[0].Name
           $mygetSourcePath = "https://www.myget.org/F/handycontrol"
           nuget setApiKey ${{ secrets.MYGETTOKEN }} -Source $mygetSourcePath