oslo.i18n 6.7.1 release

meta:version: 6.7.1
meta:team: oslo
meta:diff-start: -
meta:series: gazpacho
meta:branch: master
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Stephen Finucane <sfinucan@redhat.com>
meta:release:Commit: Stephen Finucane <sfinucan@redhat.com>
meta:release:Change-Id: I4f197d9339e982b1def3cef20ab6e637b53bc1f0
meta:release:Code-Review+1: Takashi Kajinami <kajinamit@oss.nttdata.com>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>