Python dependency: Bump testscenarios in /web/regression

Bumps [testscenarios](https://github.com/testing-cabal/testscenarios) from 0.5.0 to 0.6.1.
- [Changelog](https://github.com/testing-cabal/testscenarios/blob/master/NEWS)
- [Commits](testing-cabal/testscenarios@0.5...0.6.1)

---
updated-dependencies:
- dependency-name: testscenarios
  dependency-version: 0.6.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

web/regression/requirements.txt

@@ -28,6 +28,6 @@ pbr==7.0.3
 pycodestyle>=2.5.0
 python-mimeparse==2.0.0
 selenium==4.41.0
-testscenarios==0.5.0
+testscenarios==0.6.1
 testtools==2.8.7
 traceback2==1.4.0