Merge "update constraint for horizon to new release 25.7.0"

Author: Zuul

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===25.6.0
+horizon===25.7.0
 octavia-lib===3.11.0
 python-watcherclient===4.10.0
 MarkupSafe===3.0.3