build(deps): bump posthog-js from 1.136.2 to 1.142.1

Bumps [posthog-js](https://github.com/PostHog/posthog-js) from 1.136.2 to 1.142.1.
- [Release notes](https://github.com/PostHog/posthog-js/releases)
- [Changelog](https://github.com/PostHog/posthog-js/blob/main/CHANGELOG.md)
- [Commits](PostHog/posthog-js@v1.136.2...v1.142.1)

---
updated-dependencies:
- dependency-name: posthog-js
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -32,7 +32,7 @@
     "fs": "^0.0.1-security",
     "next": "^14.2.3",
     "next-mdx-remote": "^5.0.0",
-    "posthog-js": "^1.136.2",
+    "posthog-js": "^1.142.1",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-scroll-parallax": "^3.4.5",