Bump pylint-django from 2.5.0 to 2.5.1 (mercos#125)

Bumps [pylint-django](https://github.com/PyCQA/pylint-django) from 2.5.0 to 2.5.1.
- [Release notes](https://github.com/PyCQA/pylint-django/releases)
- [Changelog](https://github.com/PyCQA/pylint-django/blob/master/CHANGELOG.rst)
- [Commits](pylint-dev/pylint-django@v2.5.0...v2.5.1)

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

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

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

Author: dependabot[bot]

Diff for: requirements.txt

@@ -1,5 +1,5 @@
 pylint==2.12.2
-pylint-django==2.5.0
+pylint-django==2.5.1
 django==2.2.25
 pylint-celery==0.3
 celery==5.2.3