IOS 14.5.1 build 18E212

iOS 14.5 build 18E212 is the official RTM build of iOS 14.5.1, which was released to the public on 3 May 2021.

Fixes

 * Fixed an issue with App Tracking Transparency where some users who previously disabled "Allow Apps to Request to Track" may not receive prompts from apps after re-enabling it.
 * Patched a WebKit security vulnerability that could lead to arbitrary code execution.