chore(deps): bump react-json-tree in /superset-frontend

Bumps [react-json-tree](https://github.com/reduxjs/redux-devtools) from 0.17.0 to 0.20.0.
- [Release notes](https://github.com/reduxjs/redux-devtools/releases)
- [Commits](https://github.com/reduxjs/redux-devtools/commits)

---
updated-dependencies:
- dependency-name: react-json-tree
  dependency-version: 0.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

superset-frontend/package-lock.json

@@ -175,7 +175,7 @@
     "react-google-recaptcha": "^3.1.0",
     "react-hot-loader": "^4.13.1",
     "react-intersection-observer": "^9.16.0",
-    "react-json-tree": "^0.17.0",
+    "react-json-tree": "^0.20.0",
     "react-lines-ellipsis": "^0.15.4",
     "react-loadable": "^5.5.0",
     "react-redux": "^7.2.9",