chore(deps-dev): bump rc-dropdown from 4.0.1 to 4.2.0

Bumps [rc-dropdown](https://github.com/react-component/dropdown) from 4.0.1 to 4.2.0.
- [Release notes](https://github.com/react-component/dropdown/releases)
- [Changelog](https://github.com/react-component/dropdown/blob/master/HISTORY.md)
- [Commits](react-component/dropdown@v4.0.1...v4.2.0)

---
updated-dependencies:
- dependency-name: rc-dropdown
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -91,7 +91,7 @@
     "np": "^9.0.0",
     "prettier": "^3.1.0",
     "rc-animate": "^3.0.0",
-    "rc-dropdown": "~4.0.1",
+    "rc-dropdown": "~4.2.0",
     "rc-menu": "~9.13.0",
     "rc-tooltip": "^5.2.1",
     "react": "^16.0.0",