pbr 5.11.1 release

meta:version: 5.11.1
meta:diff-start: -
meta:series: independent
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Jeremy Stanley <fungi@yuggoth.org>
meta:release:Commit: Jeremy Stanley <fungi@yuggoth.org>
meta:release:Change-Id: Ia5ac5672c294e3689b35cd569827e3f8f6a03b5e
meta:release:Code-Review+1: Stephen Finucane <stephenfin@redhat.com>
meta:release:Code-Review+2: Hervé Beraud <herveberaud.pro@gmail.com>
meta:release:Code-Review+1: Riccardo Pittau <elfosardo@gmail.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Workflow+1: Elod Illes <elod.illes@est.tech>
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