Navigator: mission_block: reduce enforce eexit course margin to 105% … #283

Job	Run time
build (check_format)	1m 4s
build (tests)	5m 30s
build (tests_coverage)	6m 22s
build (px4_fmu-v2_default stack_check)	3m 18s
build (validate_module_configs)	49s
build (shellcheck_all)	1m 35s
build (NO_NINJA_BUILD=1 px4_fmu-v5_default)	4m 21s
build (NO_NINJA_BUILD=1 px4_sitl_default)	3m 5s
build (airframe_metadata)	1m 2s
build (module_documentation)	1m 7s
build (parameters_metadata)	1m 9s
	29m 22s

Provide feedback