React Native: v0.62.3 Release

This patch release is specifically targetted towards Xcode 12.5. The changes done are tailored to unblock developers still relying on v0.62 of RN.

Aside from bumping your version from 0.62.2 to 0.62.3, please make sure to add this line to your podfile (or modify it if you already had it):

use_flipper!('Flipper' => '0.75.1', 'Flipper-Folly' => '2.5.3', 'Flipper-RSocket' => '1.3.1')

After which, do all the classic necessary cleans (node_modules, caches, pod folders, etc)(react-native-clean-project is your ally) then do yarn install and a pod install --repo-update (if pod install fails on an error about a Flipper package, just remove the relevant lines from the podfile.lock and run the pod install again).

The only other commit picked & released along the Xcode 12.5 fixes is: * Update validateBaseUrl to use latest regex (commit) which fixes CVE-2020-1920, GHSL-2020-293.

To help you upgrade to this version, you can use the upgrade helper ⚛️

You can find the whole changelog history over at react-native-releases.