update constraint for horizon to new release 25.7.3

meta: version: 25.7.3
meta: team: horizon
meta: diff-start: -
meta: series: gazpacho
meta: branch: stable/2026.1
meta: release-type: release
meta: pypi: no
meta: first: no
meta: release:Author: Tatiana Ovchinnikova <t.v.ovtchinnikova@gmail.com>
meta: release:Commit: Tatiana Ovchinnikova <t.v.ovtchinnikova@gmail.com>
meta: release:Change-Id: Iddf43b43928c538e2457d4aef0cc1b025829716e
meta: release:Workflow+1: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+1: Goutham Pacha Ravi <gouthampravi@gmail.com>
meta: release:Code-Review+2: Dr. Jens Harbott <frickler@offenerstapel.de>
meta: release:Code-Review+2: Elod Illes <elod.illes@est.tech>
Change-Id: I392f2a3e6d95bb670c3dc1bb5fc68feb2cbc87c1
Signed-off-by: OpenStack Proposal Bot <openstack-infra@lists.openstack.org>
Generated-By: openstack/project-config:roles/copy-release-tools-scripts/files/release-tools/update_constraints.sh

Author: OpenStack Proposal Bot

upper-constraints.txt

@@ -111,7 +111,7 @@ debtcollector===3.0.0
 responses===0.26.0
 backports.strenum===1.3.1;python_version=='3.10'
 croniter===6.0.0
-horizon===25.7.2
+horizon===25.7.3
 octavia-lib===3.11.0
 python-watcherclient===4.10.0
 MarkupSafe===3.0.3