Dev build versions

We are trying to work out what is the most recent version we can update to while making it so all devs can still develop using the version on their OS/distro.

Developer testing with various GCC compiler and hardware versions demonstrates code stability, and helps suss out intermittent issues such as timing issues or uninitialized memory. But, particularly if the nightly build system uses a different GCC version from most developers, a developer-testing phase may be needed for future firmware release candidates before the worldwide release announcement.

Note that higher GCC versions contain larger libraries that consume more of our limited ROM space.

Dev	GCC Version	Platform	Issues
Stable/nightly	9.2.1	ubuntu:20.04	ADSB fails in v1.8.0 (some claim other versions too TBD)
@jlynx	9.4.0	Ubuntu (WSL)	None (That I am aware of)
@u-foka	13.2.1	M1 Mac	File size too big
@notherngineer	9.3.1	Debian 11	None
@bernd-herzog	9.2.1	ubuntu:22	None
@zxkmm	13.2.0	Arch Linux on X86_64 PC (Intel Core i7-8Gen*h)	Image size too big
@zxkmm	13.2.0	Manjaro Linux on X86_64 PC (Intel Core i3-3Gen)	Image size too big
@zxkmm	10.3-2021.10-aarch64	Armbian on Amlogic S905D Cortex-A53 microchip	Image size too big