update constraint for python-openstackclient to new release 6.6.1

meta: version: 6.6.1
meta: diff-start: -
meta: series: caracal
meta: branch: stable/2024.1
meta: release-type: release
meta: pypi: yes
meta: first: no
meta: release:Author: Stephen Finucane <sfinucan@redhat.com>
meta: release:Commit: Stephen Finucane <sfinucan@redhat.com>
meta: release:Change-Id: I8df84f8c6dc2d9a336afd1a8e576ee9ded47f798
meta: release:Workflow+1: Elod Illes <elod.illes@est.tech>
meta: release:Code-Review+2: Jens Harbott <frickler@offenerstapel.de>
meta: release:Code-Review+1: Artem Goncharov <artem.goncharov@gmail.com>
meta: release:Code-Review+2: Elod Illes <elod.illes@est.tech>
Change-Id: I4d85963cec1ebd1c4db8ccc90ec05f4ecd8d1d00

Author: OpenStack Proposal Bot

upper-constraints.txt

@@ -493,7 +493,7 @@ GitPython===3.1.42
 python-ironicclient===5.5.0
 XStatic===1.0.3
 XStatic-Angular-FileUpload===12.2.13.0
-python-openstackclient===6.6.0
+python-openstackclient===6.6.1
 pyzmq===25.1.2
 nocaselist===2.0.0
 oslo.db===15.0.0