Bump stevedore from 5.5.0 to 5.6.0

Bumps [stevedore](https://docs.openstack.org/stevedore) from 5.5.0 to 5.6.0.

---
updated-dependencies:
- dependency-name: stevedore
  dependency-version: 5.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -95,7 +95,7 @@ pyparsing==3.2.5
 rich==14.2.0 # bandit
 pbr==7.0.3 # bandit
 pyyaml==6.0.3 # bandit
-stevedore==5.5.0  # bandit
+stevedore==5.6.0  # bandit
 bandit==1.9.1
 
 django-smtp-ssl==1.0