chore: bump pnpm to 10.33.0

Author: cblanc

package.json

@@ -2,7 +2,7 @@
   "name": "@ideal-postcodes/openapi",
   "description": "Ideal Postcodes OpenAPI v3 specifications",
   "version": "4.16.0",
-  "packageManager": "pnpm@10.28.0",
+  "packageManager": "pnpm@10.33.0",
   "devDependencies": {
     "@cablanchard/tsconfig": "~2.0.0",
     "@redocly/cli": "~2.0.7",