build(deps): bump debounce from 1.2.1 to 2.1.0 in /example

Bumps [debounce](https://github.com/sindresorhus/debounce) from 1.2.1 to 2.1.0.
- [Release notes](https://github.com/sindresorhus/debounce/releases)
- [Commits](sindresorhus/debounce@1.2.1...v2.1.0)

---
updated-dependencies:
- dependency-name: debounce
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

example/package.json

@@ -25,7 +25,7 @@
     "@turf/helpers": "^6.5.0",
     "@turf/length": "^6.5.0",
     "@turf/nearest-point-on-line": "6.5.0",
-    "debounce": "^1.2.0",
+    "debounce": "^2.1.0",
     "fbjs": "^3.0.0",
     "moment": "^2.24.0",
     "prop-types": "^15.7.2",