chore(feature-flags): Bump posthoganalytics version

[neilkakkar]

Problem

Bumping posthoganalytics, which includes a local evaluation 'safe mode'.

Changes

👉 Stay up-to-date with PostHog coding conventions for a smoother review.

How did you test this code?

Run locally, see everything still works.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.