Bump pbr from 7.0.2 to 7.0.3

Bumps [pbr](https://docs.openstack.org/pbr/latest/) from 7.0.2 to 7.0.3.

---
updated-dependencies:
- dependency-name: pbr
  dependency-version: 7.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -92,7 +92,7 @@ django-lti-provider==1.0.0
 
 pyparsing==3.2.5
 
-pbr==7.0.2 # bandit
+pbr==7.0.3 # bandit
 pyyaml==6.0.3 # bandit
 stevedore==5.5.0  # bandit
 rich==14.2.0 # bandit