west.yml: MCUboot synchronization from upstream

Update Zephyr fork of MCUboot to revision:
  4a1effbc301fc302ecbaf40d4eb2be520b53010d

Brings following Zephyr relevant fixes:
 - 4a1effbc zephyr: Remove deprecated ZEPHYR_TRY_MASS_ERASE option
 - 2b924da4 samples: zephyr: Use the default MCUBoot PEM key file
 - 25b7c7a8 imgtool: make "align" command line parameter optional
 - 301d5655 readme: update for next dev release
 - e0bdcdec Update version files for 2.0.0
 - 9b92ee91 boot: zephyr: add support for LPC55Sxx

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
1 file changed