Bump pbr from 5.10.0 to 5.11.0

Bumps [pbr](https://docs.openstack.org/pbr/latest/) from 5.10.0 to 5.11.0.

---
updated-dependencies:
- dependency-name: pbr
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

requirements/lint.txt

@@ -120,9 +120,9 @@ pathspec==0.10.1 \
     # via
     #   black
     #   curlylint
-pbr==5.10.0 \
-    --hash=sha256:cfcc4ff8e698256fc17ea3ff796478b050852585aa5bae79ecd05b2ab7b39b9a \
-    --hash=sha256:da3e18aac0a3c003e9eea1a81bd23e5a3a75d745670dcf736317b7d966887fdf
+pbr==5.11.0 \
+    --hash=sha256:b97bc6695b2aff02144133c2e7399d5885223d42b7912ffaec2ca3898e673bfe \
+    --hash=sha256:db2317ff07c84c4c63648c9064a79fe9d9f5c7ce85a9099d4b6258b3db83225a
     # via stevedore
 pep8-naming==0.13.2 \
     --hash=sha256:59e29e55c478db69cffbe14ab24b5bd2cd615c0413edf790d47d3fb7ba9a4e23 \