Update ci.yml

Author: lostintangent

.github/workflows/ci.yml

@@ -22,6 +22,6 @@ jobs:
       - run: npm run build
       - name: Publish to VS Marketplace
         if: success() && startsWith(github.ref, 'refs/tags/')
-        run: vsce publish --web
+        run: npx vsce publish --web
         env:
           VSCE_PAT: ${{ secrets.VSCE_PAT }}