Bump pylint from 2.14.5 to 2.15.0 (mercos#149)

Bumps [pylint](https://github.com/PyCQA/pylint) from 2.14.5 to 2.15.0.
- [Release notes](https://github.com/PyCQA/pylint/releases)
- [Commits](pylint-dev/pylint@v2.14.5...v2.15.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-pylint==2.14.5
+pylint==2.15.0
 pylint-django==2.5.3
 django==3.2.15
 pylint-celery==0.3