[native] Bump react-native-svg to 12.3.0

Summary:
Downstream dependencies have issues surfaced by yarn audit

Checked the release notes: https://github.com/react-native-svg/react-native-svg/releases and didn't find any breaking changes

Depends on D3855

Test Plan: CI

Reviewers: def-au1t, palys-swm, ashoat

Reviewed By: ashoat

Subscribers: Adrian, karol-bisztyga, yayabosh

Differential Revision: https://phabricator.ashoat.com/D3856