Bump responses from 0.10.15 to 0.15.0

Bumps [responses](https://github.com/getsentry/responses) from 0.10.15 to 0.15.0.
- [Release notes](https://github.com/getsentry/responses/releases)
- [Changelog](https://github.com/getsentry/responses/blob/master/CHANGES)
- [Commits](https://github.com/getsentry/responses/compare/0.10.15...0.15.0)

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

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

requirements.txt

@@ -29,7 +29,7 @@ pytz==2021.1
 PyYAML==5.4.1
 redis==3.5.3
 requests==2.25.1
-responses==0.13.3
+responses==0.15.0
 rq==1.8.0
 rsa==4.7.2
 selenium==3.141.0