Bump pbr from 6.1.0 to 6.1.1

Bumps [pbr](https://docs.openstack.org/pbr/latest/) from 6.1.0 to 6.1.1.

---
updated-dependencies:
- dependency-name: pbr
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -131,7 +131,7 @@ django-smtp-ssl==1.0
 
 ctlsettings==0.4.3
 
-pbr==6.1.0
+pbr==6.1.1
 pyyaml==6.0.2
 stevedore>=1.20.0 # Apache-2.0
 rich==13.9.4 # bandit