Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add N86 (#23454)

Add new set of keycodes for LED Matrix (#23432)

Separate keycode handling for LED Matrix and Backlight (#23426)

Bodge consolidation. (#23448)

Oneshot locked mods split transaction (#23434)

Merge remote-tracking branch 'origin/master' into develop

Fix Layout_Arrow 3rd key in bottom row (#23443)

Co-authored-by: v <v@phux.dev>

Tidy up default layer handling in keymaps (#23436)

Merge remote-tracking branch 'origin/master' into develop

Update hand_wire.md (#23429)

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add Skelett60 (#23409)

Co-authored-by: yiancar <yiancar@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Duncan Sutherland <dunk2k_2000@hotmail.com>

Migrate build target markers to keyboard.json - YZ (#23421)

Rename `process_{led,rgb}_matrix()` (#23422)

Remove more unnecessary `quantum.h` includes (#23402)

Update ChibiOS submodules. (#23405)

"features.split" is not a valid key (#23419)

Tidy up keyboards/zvecr (#23418)

Remove deprecated quantum keycodes (#23407)