Merge branch 'PureBoot-Release-24' into 'master'

Update PureBoot images to Release-24/RC1

See merge request !57

changelog.md

@@ -2,6 +2,18 @@
 
 This document provides a brief chronological summary of Purism Librem firmware releases, and the changes in each build/release.
 
+### PureBoot Release 24
+2022-11-22
+
+* PureBoot Basic: Add USB automatic boot configuration setting.
+  * When enabled, bootable USB devices are booted by default instead of the installed operating system.
+* PureBoot Basic: Boot first installed menu entry by default.
+  * Default boot options no longer have to be configured manually, and no reconfiguration is needed if the OS kernel is updated.
+  * This can be disabled in configuration to configure a custom boot option instead.
+* Ignore device specifications in GRUB menu entries - fixes PureOS installer's GRUB/EFI boot options.
+* Rebased on HEADS upstream master branch (139ecb8)
+* Updated all devices (except L1UM) to coreboot 4.18-Purism-1 (tag)
+
 ### coreboot 4.18-Purism-1
 2022-11-16