update constraint for futurist to new release 3.1.0

meta: version: 3.1.0
meta: team: oslo
meta: diff-start: -
meta: series: independent
meta: branch: master
meta: release-type: release
meta: pypi: yes
meta: first: no
meta: release:Author: Hervé Beraud <hberaud@redhat.com>
meta: release:Commit: Hervé Beraud <hberaud@redhat.com>
meta: release:Change-Id: Ie9376ed6df24d779c51b6c0ed65a3664558ebe15
meta: release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+1: Daniel Bengtsson <dbengt@redhat.com>
meta: release:Workflow+1: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
Change-Id: I614bae4d81f34f297167439acdbf0d93a5031d33

Author: OpenStack Proposal Bot

upper-constraints.txt

@@ -542,7 +542,7 @@ decorator===5.1.1
 DateTimeRange===2.3.1
 cffi===1.17.1
 python-cyborgclient===2.4.0
-futurist===3.0.0
+futurist===3.1.0
 jsonschema===4.23.0
 sphinxcontrib-devhelp===2.0.0
 python-blazarclient===4.2.0