Merge branch 'release/v6.1.0' #87

Job	Run time
build (ubuntu-latest, examples/mbed-rtos-blink-baremetal)	1m 12s
build (ubuntu-latest, examples/mbed-rtos-cellular)	3m 12s
build (ubuntu-latest, examples/mbed-rtos-ethernet-tls)	2m 45s
build (ubuntu-latest, examples/zephyr-blink)	3m 27s
build (ubuntu-latest, examples/zephyr-synchronization)	3m 18s
build (windows-latest, examples/mbed-rtos-blink-baremetal)	4m 46s
build (windows-latest, examples/mbed-rtos-cellular)	11m 48s
build (windows-latest, examples/mbed-rtos-ethernet-tls)	11m 20s
build (windows-latest, examples/zephyr-blink)	11m 19s
build (windows-latest, examples/zephyr-synchronization)	10m 38s
build (macos-latest, examples/mbed-rtos-blink-baremetal)	2m 55s
build (macos-latest, examples/mbed-rtos-cellular)	4m 23s
build (macos-latest, examples/mbed-rtos-ethernet-tls)	5m 0s
build (macos-latest, examples/zephyr-blink)	9m 12s
build (macos-latest, examples/zephyr-synchronization)	5m 8s
	1h 30m 23s

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