Bump pyyaml from 5.3.1 to 5.4.1

Bumps [pyyaml](https://github.com/yaml/pyyaml) from 5.3.1 to 5.4.1.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](yaml/pyyaml@5.3.1...5.4.1)

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

Author: dependabot-preview[bot]

poetry.lock

@@ -22,7 +22,7 @@ pytest = "6.2.2"
 pytest-mock = "3.5.1"
 pytest-cov = "2.11.1"
 python-dateutil = "2.8.1"
-pyyaml = "5.3.1"
+pyyaml = "5.4.1"
 requests = "2.25.1"
 sqlalchemy = "1.3.22"
 SQLAlchemy-Utils = "0.36.8"