Stable Release v1.15.4

What's Changed

• Backport: ARK FPV 1.15 by @AlexKlimaj in #23948
• [Backport v1.15] [Sponsored by Holybro] Add Goermicro/Goertek SPA06 baro driver by @julianoes in #24091
• [BACKPORT v1.15] gps: heading fixes for NMEA/Unicore by @julianoes in #24092
• [RELEASE/1.15] Fixedwing: fix wheel controller by @bresch in #24169
• [v1.15] gps: revert ubx changes, point to 1.15 branch by @julianoes in #24303

Full Changelog: v1.15.2...v1.15.4