build(deps): update bitflags requirement from 1.2.1 to 2.6.0 #564

Job	Run time
mavlink-dump	55s
linting	37m 24s
formatting	6s
internal-tests (ardupilotmega)	1m 11s
msrv	4m 18s
internal-tests (ardupilotmega, --features signing)	1m 20s
msrv (--features signing)	4m 19s
internal-tests (asluav)	1m 25s
internal-tests (asluav, --features signing)	1m 20s
internal-tests (matrixpilot)	1m 23s
internal-tests (matrixpilot, --features signing)	1m 23s
internal-tests (minimal)	1m 8s
internal-tests (minimal, --features signing)	25s
internal-tests (paparazzi)	21s
internal-tests (paparazzi, --features signing)	1s
internal-tests (python_array_test)	1s
internal-tests (python_array_test, --features signing)	1s
internal-tests (slugs)	1s
internal-tests (slugs, --features signing)	1s
internal-tests (standard)	1s
internal-tests (standard, --features signing)	1s
internal-tests (test)	1s
internal-tests (test, --features signing)	1s
internal-tests (ualberta)	1s
internal-tests (ualberta, --features signing)	1s
internal-tests (uavionix)	1s
internal-tests (uavionix, --features signing)	1s
internal-tests (icarous)	1m 7s
internal-tests (icarous, --features signing)	1m 14s
internal-tests (common)	1m 18s
internal-tests (common, --features signing)	1m 9s
docs	0s
build	0s
test-embedded-size	0s
	1h 1m 59s

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