finding the PACKAGE_VERSION in new job

.github/workflows/build.yml

@@ -176,6 +176,11 @@ jobs:
       - name: Checkout repo
         uses: actions/checkout@v2
 
+      - name: Set PACKAGE_VERSION
+        run: |
+          $env:pkgVersion = (Get-Content -Raw -Path .\package.json | ConvertFrom-Json).version
+          echo "PACKAGE_VERSION=$env:pkgVersion" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+
       - name: Download Windows Nuget
         uses: actions/download-artifact@v2
         with: