chore(deps): update dependency posthog-js to v1.256.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	OpenSSF
posthog-js (source)	dependencies	patch	1.256.0 -> 1.256.2

---

Release Notes

PostHog/posthog-js (posthog-js)

v1.256.2: 1.256.2

Compare Source

1.256.2 - 2025-07-04

• fix: Fix backwards compatibility (#​2074)
• feat: Sdk spec gen (#​2029)
• Fix CHANGELOG.md (#​2068)

v1.256.1: 1.256.1

Compare Source

1.256.1 - 2025-07-02

• fix survey input color on dark backgrounds (#​2071)

---

Configuration

📅 Schedule: Branch creation - At 12:00 AM through 04:59 AM and 10:00 PM through 11:59 PM, Monday through Friday ( * 0-4,22-23 * * 1-5 ), Only on Sunday and Saturday ( * * * * 0,6 ) (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

Summary by Sourcery

Update posthog-js to v1.256.2 to incorporate upstream patches and new SDK features.

New Features:

• Pull in SDK spec generation support introduced in posthog-js v1.256.2.

Bug Fixes:

• Restore backwards compatibility in posthog-js.
• Fix survey input color on dark backgrounds.

Documentation:

• Correct CHANGELOG.md in posthog-js.

Chores:

• Bump posthog-js dependency from v1.256.0 to v1.256.2.