fix: correct environment variable reference for VSCE_PAT in release workflow

Author: ItsCoding

.github/workflows/release.yml

@@ -38,7 +38,7 @@ jobs:
           files: "*.vsix"
 
       - name: Publish to VS Code Marketplace
-        if: ${{ secrets.VSCE_PAT != '' }}
+        if: env.VSCE_PAT != ''
         run: npx vsce publish --packagePath kanbancode-${{ github.event.release.tag_name }}.vsix
         env:
           VSCE_PAT: ${{ secrets.VSCE_PAT }}