sane-backends: upgraded package to upstream

Upgraded media-gfx/sane-backends to version 1.0.23-r1 on amd64, arm, x86

BUG=chromium:239086
TEST=emerge-lumpy, emerge-daisy, run "sane-find-scanner"
and "scanimage" with attached USB scanner.

Change-Id: Ic06c19da7bc093ffa1f7f71375c5e72a1fa0649b
Reviewed-on: https://gerrit.chromium.org/gerrit/50470
Reviewed-by: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Paul Stewart <pstew@chromium.org>
9 files changed