chore(deps-dev): bump flatbush from 4.1.0 to 4.2.0 (#6762)

Bumps [flatbush](https://github.com/mourner/flatbush) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/mourner/flatbush/releases)
- [Commits](https://github.com/mourner/flatbush/compare/v4.1.0...v4.2.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -30,7 +30,7 @@
     "eslint-plugin-you-dont-need-lodash-underscore": "6.12.0",
     "eventemitter3": "1.2.0",
     "file-saver": "2.0.5",
-    "flatbush": "4.1.0",
+    "flatbush": "4.2.0",
     "git-rev-sync": "3.0.2",
     "html2canvas": "1.4.1",
     "imports-loader": "4.0.1",