Merge branch 'release/v6.3.0' #96

Job	Run time
build (ubuntu-latest, examples/mbed-rtos-blink-baremetal)	1m 7s
build (ubuntu-latest, examples/mbed-rtos-cellular)	2m 34s
build (ubuntu-latest, examples/mbed-rtos-ethernet-tls)	2m 30s
build (ubuntu-latest, examples/zephyr-blink)	5m 41s
build (ubuntu-latest, examples/zephyr-synchronization)	6m 0s
build (windows-latest, examples/mbed-rtos-blink-baremetal)	6m 26s
build (windows-latest, examples/mbed-rtos-cellular)	11m 19s
build (windows-latest, examples/mbed-rtos-ethernet-tls)	10m 49s
build (windows-latest, examples/zephyr-blink)	15m 32s
build (windows-latest, examples/zephyr-synchronization)	11m 21s
build (macos-latest, examples/mbed-rtos-blink-baremetal)	2m 29s
build (macos-latest, examples/mbed-rtos-cellular)	6m 19s
build (macos-latest, examples/mbed-rtos-ethernet-tls)	4m 30s
build (macos-latest, examples/zephyr-blink)	6m 11s
build (macos-latest, examples/zephyr-synchronization)	6m 57s
	1h 39m 45s

Provide feedback