chore: Bump prql-js to 0.8.1 (#192)

Author: max-sixty

package-lock.json

@@ -6,7 +6,7 @@
     "url": "https://github.com/prql/prql-vscode.git"
   },
   "publisher": "prql-lang",
-  "version": "0.6.1",
+  "version": "0.8.1",
   "icon": "resources/prql-logo.png",
   "engines": {
     "vscode": "^1.65.0"