Bump rc-dialog from 8.3.4 to 8.4.0 (#132)

Bumps [rc-dialog](https://github.com/react-component/dialog) from 8.3.4 to 8.4.0.
- [Release notes](https://github.com/react-component/dialog/releases)
- [Changelog](https://github.com/react-component/dialog/blob/master/HISTORY.md)
- [Commits](react-component/dialog@v8.3.4...v8.4.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

package.json

@@ -68,7 +68,7 @@
     "core-js": "^3.2.1",
     "expect.js": "0.3.x",
     "precommit-hook": "^3.0.0",
-    "rc-dialog": "~8.3.0",
+    "rc-dialog": "~8.4.0",
     "rc-test": "6.x",
     "rc-tools": "8.x",
     "react": "^16.0.0",