gdbus-codegen: upgraded package to upstream

Upgraded dev-util/gdbus-codegen to version 2.66.7 on x86

I needed to add python3_6 compatibility for this to work.

BUG=b:181107534
TEST=cq

Change-Id: I370a82f040b4079aa78507fd84b413606ccb7bc9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2719086
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Commit-Queue: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Robert Kolchmeyer <rkolchmeyer@google.com>
3 files changed