dev-python/setproctitle: Upgrade package to 1.2.3

Newer releases of setproctitle support both Python 3.6 and 3.8, let's
upgrade.  1.3.0 drops support for 3.6, so we need to hold back to
1.2.3.

Note: this required patching PYTHON_COMPAT to list 3.6 as well.
That's OK since the package itself does, just not the upstream ebuild.

BUG=b:187794810
TEST=sudo emerge dev-python/setproctitle

Change-Id: I0c76f134805d2d611ad2c445ad88226cc411db10
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/4288631
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
3 files changed