fix: include workflow-patterns.json in npm package (#681)

Added data/workflow-patterns.json to the files array in package.json so
the patterns file ships with the npm package. Without this, the
search_templates patterns mode returns an error asking users to manually
run the mine script.

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "n8n-mcp",
-  "version": "2.42.1",
+  "version": "2.42.2",
   "description": "Integration between n8n workflow automation and Model Context Protocol (MCP)",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -124,6 +124,7 @@
     "dist/**/*",
     "ui-apps/dist/**/*",
     "data/nodes.db",
+    "data/workflow-patterns.json",
     ".env.example",
     "README.md",
     "LICENSE",