Use num instead of string for gnome extension version (#22)

Author: chaynabors

extensions/gnome-extension/src/metadata.json

@@ -2,7 +2,7 @@
   "uuid": "[email protected]",
   "name": "Amazon Q for CLI GNOME Integration",
   "url": "https://github.com/aws",
-  "version": "1",
+  "version": 1,
   "description": "Integrates Amazon Q for CLI with GNOME Shell for versions 45+",
   "gettext-domain": "amazon-q-for-cli-gnome-integration",
   "settings-schema": "org.gnome.shell.extensions.amazon-q-for-cli-gnome-integration",