fix: missing payload seo plugin dependency<

Author: mvriu5

package-lock.json

@@ -31,6 +31,7 @@
     "@payloadcms/next": "3.81.0",
     "@payloadcms/plugin-import-export": "3.81.0",
     "@payloadcms/richtext-lexical": "3.81.0",
+    "@payloadcms/plugin-seo": "3.81.0",
     "@tabler/icons-react": "3.40.0",
     "clsx": "^2.1.1",
     "graphql": "^16.13.2",