chore(deps-dev): update @turf/helpers requirement in /packages/winnow

Updates the requirements on [@turf/helpers](https://github.com/Turfjs/turf) to permit the latest version.
- [Release notes](https://github.com/Turfjs/turf/releases)
- [Changelog](https://github.com/Turfjs/turf/blob/master/CHANGELOG.md)
- [Commits](Turfjs/turf@v7.1.0...v7.2.0)

---
updated-dependencies:
- dependency-name: "@turf/helpers"
  dependency-type: direct:development
...

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

packages/winnow/package.json

@@ -69,7 +69,7 @@
     "wkt-parser": "^1.4.0"
   },
   "devDependencies": {
-    "@turf/helpers": "^7.1.0",
+    "@turf/helpers": "^7.2.0",
     "benchmark": "^2.1.4",
     "fs-extra": "^11.2.0",
     "proxyquire": "^2.1.3",