Add changelog for 0.72.7 (#41474)

Summary:
Adds changelog for the 0.72.7 release.

## Changelog:

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[INTERNAL] [CHANGED] - Add changelog for the 0.72.7 release.

Pull Request resolved: https://github.com/facebook/react-native/pull/41474

Test Plan: Read the changelog 🤞

Reviewed By: christophpurrer

Differential Revision: D51344851

Pulled By: huntie

fbshipit-source-id: a142a76ba75665fd0e6c7104ffb008f0f4ff3c95