chore(deps-dev): bump baseline-browser-mapping in /superset-frontend

Bumps [baseline-browser-mapping](https://github.com/web-platform-dx/baseline-browser-mapping) from 2.10.16 to 2.10.20.
- [Release notes](https://github.com/web-platform-dx/baseline-browser-mapping/releases)
- [Commits](web-platform-dx/baseline-browser-mapping@v2.10.16...v2.10.20)

---
updated-dependencies:
- dependency-name: baseline-browser-mapping
  dependency-version: 2.10.20
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

superset-frontend/package-lock.json

@@ -306,7 +306,7 @@
     "babel-plugin-dynamic-import-node": "^2.3.3",
     "babel-plugin-jsx-remove-data-test-id": "^3.0.0",
     "babel-plugin-lodash": "^3.3.4",
-    "baseline-browser-mapping": "^2.10.16",
+    "baseline-browser-mapping": "^2.10.21",
     "cheerio": "1.2.0",
     "concurrently": "^9.2.1",
     "copy-webpack-plugin": "^14.0.0",