Bump pylint from 2.6.0 to 2.7.2

Bumps [pylint](https://github.com/PyCQA/pylint) from 2.6.0 to 2.7.2.
- [Release notes](https://github.com/PyCQA/pylint/releases)
- [Changelog](https://github.com/PyCQA/pylint/blob/master/ChangeLog)
- [Commits](pylint-dev/pylint@pylint-2.6.0...pylint-2.7.2)

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

Author: dependabot-preview[bot]

poetry.lock

@@ -27,7 +27,7 @@ pytest = "^6.2"
 black = {version = "^20.8b1",allow-prereleases = true}
 pytest-cov = "^2.11.1"
 jsonschema = "^3.2.0"
-pylint = "^2.6.0"
+pylint = "^2.7.2"
 sphinx = "^3.5.3"
 sphinx-autoapi = "^1.7.0"
 sphinx-rtd-theme = "^0.5.1"