[deps] Update responses requirement from ~=0.23.1 to ~=0.25.3

Updates the requirements on [responses](https://github.com/getsentry/responses) to permit the latest version.
- [Release notes](https://github.com/getsentry/responses/releases)
- [Changelog](https://github.com/getsentry/responses/blob/master/CHANGES)
- [Commits](getsentry/responses@0.23.1...0.25.3)

---
updated-dependencies:
- dependency-name: responses
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-test.txt

@@ -1,4 +1,4 @@
 openwisp-utils[qa,selenium] @ https://github.com/openwisp/openwisp-utils/tarball/master
 django-redis~=5.4.0
 mock-ssh-server~=0.8.0
-responses~=0.23.1
+responses~=0.25.3