fix(plugin-author): bump version on every UPDATE flow mutation

## Why
The UPDATE flow only bumped version when the version field itself was the
target. Metadata changes (description, keywords, author) went out without a
version bump, making them invisible to consumers with a cached copy.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

plugins/kyberforge/plugin.json

@@ -13,5 +13,5 @@
   "skills": [
     "skills/"
   ],
-  "version": "1.0.5"
+  "version": "1.0.6"
 }