[changelog] Add react-native upgrade to CHANGELOG (#8573)
[changelog] Add react-native upgrade to CHANGELOG (#8573)

# Why

Let's have all the user-facing changes in the changelog! (Sorry for not adding it earlier.)

# How

Edited the file, mentioning both pull requests related to the upgrade.

# Test Plan

None.
exponent/exponent,exponent/exponent,exponentjs/exponent,exponentjs/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent