scripts: Update pyocd version to 0.16.1
scripts: Update pyocd version to 0.16.1

Update the pyocd version to pick up a fix for the command 'pyocd erase',
which was broken in 0.15.0 and fixed in 0.16.0. Although we don't have
any in-tree uses of this command in zephyr, there will soon be in-tree
uses in mcuboot when the deprecated 'pyocd-flashtool' and 'pyocd-tool'
commands are replaced with the new unified pyocd commands.

Signed-off-by: Maureen Helm <87a696db5547fa477bda9f9e0f00013c839c14d3@nxp.com>

ldts/zephyr,galak/zephyr,finikorg/zephyr,Vudentz/zephyr,nashif/zephyr,galak/zephyr,ldts/zephyr,ldts/zephyr,ldts/zephyr,finikorg/zephyr,nashif/zephyr,finikorg/zephyr,galak/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,Vudentz/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,finikorg/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,Vudentz/zephyr