Danger: handle errors from Jest

[0pdd]

The puzzle 1484-67f25d21 from #1484 has to be resolved:

mystamps/Dangerfile

Line 383 in ad81434

# @todo #1484 Danger: handle errors from Jest

The puzzle was created by Slava Semushin on 10-Nov-21.

[php-coder]

I have decided discontinue usage of Danger (see #1600).