update constraint for horizon to new release 25.4.0

meta: version: 25.4.0
meta: team: horizon
meta: diff-start: -
meta: series: flamingo
meta: branch: master
meta: release-type: release
meta: pypi: no
meta: first: yes
meta: release:Author: Tatiana Ovchinnikova <t.v.ovtchinnikova@gmail.com>
meta: release:Commit: Tatiana Ovchinnikova <t.v.ovtchinnikova@gmail.com>
meta: release:Change-Id: Ia05bd655f21670f2e92167bf3ea1f7ac64e4a152
meta: release:Workflow+1: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
Change-Id: I6ce10b1a6bf2e0e7d0e75394ff037427456fca9f

Author: OpenStack Proposal Bot

upper-constraints.txt

@@ -113,7 +113,7 @@ jaraco.classes===3.4.0
 debtcollector===3.0.0
 responses===0.25.7
 croniter===6.0.0
-horizon===25.3.0
+horizon===25.4.0
 octavia-lib===3.8.0
 python-watcherclient===4.8.0
 MarkupSafe===3.0.2