MacOS Monterey build 21E258

macOS Monterey build 21E258 is the official RTM build of macOS Monterey 12.3.1, which was released to the public on 31 March 2022.

Fixes

 * Fixed an issue in which Bluetooth devices like game controllers to randomly disconnect from the Mac after playing audio using Beats headphones.
 * Fixed an issue that sometimes caused USB-C or Thunderbolt external displays to not turn on when the 2018 Mac mini was used as a secondary display.
 * An AppleAVD issue that could allow an application to execute arbitrary code with kernel privileges was fixed.
 * Fixed an issue in which the Intel Graphics Driver could allow applications to read kernel memory.