[v1.4] gimbal device test fixes #3444

Job	Run time
Ubuntu/Debian packaging (Ubuntu 20.04)	7m 32s
alpine 3.11.6 (musl)	25m 43s
ubuntu-18.04 (package, non-mavsdk_server)	4m 43s
coverage (ubuntu-20.04)	6m 2s
ubuntu-20.04 (package, non-mavsdk_server)	6m 51s
android-arm	14m 57s
linux-armv6	5m 5s
android-arm64	18m 50s
linux-armv6-musl	25m 49s
linux-armv7	5m 49s
manylinux2010-x64	23m 54s
android-x86	21m 31s
linux-armv7l-musl	26m 45s
linux-arm64	5m 6s
android-x86_64	16m 1s
linux-arm64-musl	32m 46s
ios	28m 47s
macOS	33m 37s
ios_simulator	18m 1s
ubuntu-20.04 (check style and docs)	7m 24s
fedora-34 (package, non-mavsdk_server)	6m 35s
macOS-framework	34m 32s
fedora-35 (package, non-mavsdk_server)	5m 18s
ubuntu-20.04 (mavsdk, hunter)	9m 28s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	3m 38s
ubuntu-20.04 (proto check)	17m 3s
ubuntu-20.04 (mavsdk_server, superbuild)	23m 3s
Windows	49m 12s
iOS XCFramework	50s
	8h 4m 52s

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