Bump version from 0.7.1 to 0.7.3

Author: jackos

package.json

@@ -2,7 +2,7 @@
   "name": "mdlab",
   "displayName": "Markdown Lab",
   "publisher": "jackos",
-  "version": "0.7.1",
+  "version": "0.7.3",
   "description": "Run markdown code blocks interactively in a notebook with any programming language, and generate code blocks with LLMs.",
   "main": "./out/extension.js",
   "icon": "mdlab.png",