graphics/jpeg-turbo: Update to 2.1.1

Backport upstream commits:
129f0cb76346ceede8f4d8d87dea8acb0809056c
173900b1cabb027495ae530c71250bcedc9925d5

exp-run by antoine
Additional build tests on aarch64 by mikael

PR: 258336
Approved by: arrowd
Differential Revision: https://reviews.freebsd.org/D31988