Update pnpm to v11.11.0 [SECURITY]

Author: renovate[bot]

package.json

@@ -3,7 +3,7 @@
   "version": "0.26.0",
   "description": "An MFM parser implementation with TypeScript",
   "type": "module",
-  "packageManager": "pnpm@11.8.0",
+  "packageManager": "pnpm@11.11.0",
   "main": "./built/index.mjs",
   "types": "./built/index.d.ts",
   "exports": {