new keyboard: edinburgh41 (#19569)

* added edinburgh41

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: jack <0x6a73@protonmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

Decrease LED animation frequency to improve performance (#19677)

[Keymap] Update brauner preonic layout (#19665)

Update understanding_qmk.md (#19664)

Changed "...4 row by 5 column numpad" to "...5 row by 4 column numpad" on line 46.

escaped stray backslash in bux.py (#19667)

[Keyboard] Add the Black Hellebore (#19655)

[Keyboard] Add missing `dip_switch_update_kb` for Keychron V2 (#19674)

fixup splitkb/kyria VIA keymap (#19676)

[Keyboard] Fix boardsource/lulu/avr encoder pins (#19672)

[Keymap] Add youturn/yt keymap for think65 (#19300)

Co-authored-by: jack <0x6a73@protonmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Jue Liu <youturn@Jues-MacBook-Pro.local>

[Keyboard] Add Scotto40 Keyboard (#18453)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

Change era65 keymap&debounce_type (#19627)

[Keyboard] Add Kyria rev3 (#19423)

Refactor some layouts which contain keyboard name (#19645)

* Refactor some layouts which contain keyboard name

* use planck_mit

Og60 fix indicator (#19631)

djam add rgb matrix (#19621)

Refactor some layouts which contain keyboard name (#19643)

Remove stray UNUSED_PINS (#19639)

Refactor some layouts which contain keyboard name (#19642)

Docs: typo fixes in platformdev_blackpill_f4x1.md (#19635)