update constraint for tap-as-a-service to new release 15.0.0

meta: version: 15.0.0
meta: team: neutron
meta: diff-start: 14.0.0
meta: series: epoxy
meta: branch: master
meta: release-type: release
meta: pypi: yes
meta: first: yes
meta: release:Author: Előd Illés <elod.illes@est.tech>
meta: release:Commit: Előd Illés <elod.illes@est.tech>
meta: release:Change-Id: I517781582032eb4c18f5849c9b9e5765d18380c0
meta: release:Code-Review+1: David Wilde <dwilde@redhat.com>
meta: release:Code-Review+1: Carlos Eduardo <ces.eduardo98@gmail.com>
meta: release:Code-Review+1: Michael Johnson <johnsomor@gmail.com>
meta: release:Code-Review+1: Matt Crees <mattc@stackhpc.com>
meta: release:Code-Review+1: sean mooney <smooney@redhat.com>
meta: release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+1: Wenping Song <songwenping@inspur.com>
meta: release:Code-Review+1: Jon Bernard <jobernar@redhat.com>
meta: release:Code-Review-1: suzhengwei <suzhengwei@inspur.com>
meta: release:Workflow+1: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+1: Yasufumi Ogawa <yasufum.o@gmail.com>
meta: release:Code-Review+1: Omer Schwartz <oschwart@redhat.com>
meta: release:Code-Review+1: Brian Haley <haleyb.dev@gmail.com>
meta: release:Code-Review+1: Goutham Pacha Ravi <gouthampravi@gmail.com>
meta: release:Code-Review+1: ribaudr <rene.ribaud@gmail.com>
meta: release:Code-Review+2: Dr. Jens Harbott <frickler@offenerstapel.de>
meta: release:Code-Review+1: Michal Nasiadka <mnasiadka@gmail.com>
meta: release:Code-Review+1: Hao Wang <sxmatch1986@gmail.com>
Change-Id: I27ec5b62a2357d79821c71b94a3b9fd48f76dfee

Author: OpenStack Proposal Bot

upper-constraints.txt

@@ -358,7 +358,7 @@ keystonemiddleware===10.9.0
 django-formtools===2.5.1
 XStatic-Spin===1.2.5.3
 rich===13.9.4
-tap-as-a-service===15.0.0.0rc1
+tap-as-a-service===15.0.0
 os-traits===3.3.0
 typepy===1.3.4
 SecretStorage===3.3.3