Bump aresponses from 2.1.4 to 2.1.5 (#2481)

Bumps [aresponses](https://github.com/circleup/aresponses) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/circleup/aresponses/releases)
- [Commits](aresponses/aresponses@2.1.4...2.1.5)

---
updated-dependencies:
- dependency-name: aresponses
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

requirements.txt

@@ -1,7 +1,7 @@
 aiogithubapi>=21.11.0
 aiohttp>=3.6.2,<4.0
 aiohttp_cors==0.7.0
-aresponses==2.1.4
+aresponses==2.1.5
 asynctest==0.13.0
 bellybutton==0.3.1
 colorlog==6.6.0