Update push-to-myget.yml

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

@@ -15,7 +15,7 @@ jobs:
         run: |
           cd build
           .\build.ps1
-          nuget pack build-for-myget.nuspec -version 3.3.0-beta.${env:GITHUB_RUN_NUMBER}
+          nuget pack build-for-myget.nuspec -version 3.4.0-beta.${env:GITHUB_SHA::7}
           $nupkgName = @(gci *.nupkg)[0].Name
           $mygetSourcePath = "https://www.myget.org/F/handycontrol"
           nuget setApiKey ${{ secrets.MYGETTOKEN }} -Source $mygetSourcePath