fix: add missing requires field to 6 connector fragment.json and connector.json files

connectors/context7/connector.json

@@ -43,5 +43,6 @@
       "name": "query-docs",
       "display_name": "Query Docs"
     }
-  ]
-}
+  ],
+  "requires": []
+}

connectors/context7/fragment.json

@@ -6,6 +6,7 @@
   "icon_small": "context7/icon_sm.svg",
   "icon_large": "context7/icon_lg.svg",
   "user_description": "Up-to-date documentation and code examples for any library, framework, SDK, API, CLI tool, or cloud service \u2014 fetched directly from the source. Free, no API key required.",
+  "requires": [],
   "tags": [
     "documentation",
     "search",