chore: bump to 2.0.9 with structured author + email

Add author.name and author.email so npm exposes the maintainer email,
which the n8n creator portal reads when registering the package.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: arslanrana4488

package.json

@@ -1,10 +1,13 @@
 {
   "name": "n8n-nodes-contentstudio",
-  "version": "2.0.8",
+  "version": "2.0.9",
   "description": "n8n node for ContentStudio API (X-API-Key)",
   "keywords": ["n8n-community-node-package", "n8n", "workflow", "contentstudio", "social", "api", "automation"],
   "license": "MIT",
-  "author": "D4 Interactive",
+  "author": {
+    "name": "contentstudio",
+    "email": "support@contentstudio.io"
+  },
   "homepage": "https://github.com/d4interactive/n8n-nodes#readme",
   "repository": {
     "type": "git",