package/imagemagick: security bump to version 7.0.10-62

Fixes the following security issue:

CVE-2021-20176: A divide-by-zero flaw was found in ImageMagick 6.9.11-57 and
7.0.10-57 in gem.c.  This flaw allows an attacker who submits a crafted file
that is processed by ImageMagick to trigger undefined behavior through a
division by zero.  The highest threat from this vulnerability is to system
availability.

For more details, see the bugtracker:
https://github.com/ImageMagick/ImageMagick/issues/3077



- bump version to 7.0.10-62
- update license file hash (copyright year update)

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
[Peter: mention security fix]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>