chore(features) codex dependencies feat (#17960)

## Summary
Setting this up

## Testing
- [x] Unit tests pass

codex-rs/core/config.schema.json

@@ -523,6 +523,9 @@
             },
             "web_search_request": {
               "type": "boolean"
+            },
+            "workspace_dependencies": {
+              "type": "boolean"
             }
           },
           "type": "object"
@@ -2380,6 +2383,9 @@
         },
         "web_search_request": {
           "type": "boolean"
+        },
+        "workspace_dependencies": {
+          "type": "boolean"
         }
       },
       "type": "object"