Bump python-openstackclient from 6.0.0 to 7.3.1

Bumps [python-openstackclient](https://docs.openstack.org/python-openstackclient/latest/) from 6.0.0 to 7.3.1.

---
updated-dependencies:
- dependency-name: python-openstackclient
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements-rest.txt

@@ -4,7 +4,7 @@ paramiko~=3.4.0
 python-cinderclient
 python-keystoneclient
 python-novaclient
-python-openstackclient==6.0.0
+python-openstackclient==7.3.1
 PyYAML~=6.0
 shortuuid~=1.0.13
 sshtunnel~=0.4.0

requirements.txt

@@ -4,7 +4,7 @@ paramiko~=3.5.0
 python-cinderclient
 python-keystoneclient
 python-novaclient
-python-openstackclient==6.0.0
+python-openstackclient==7.3.1
 PyYAML~=6.0
 shortuuid~=1.0.13
 sshtunnel~=0.4.0