[skip-changelog] Bump pyyaml from 5.3 to 5.4 (#1385)

Bumps [pyyaml](https://github.com/yaml/pyyaml) from 5.3 to 5.4.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](yaml/pyyaml@5.3...5.4)

---
updated-dependencies:
- dependency-name: pyyaml
  dependency-type: direct:production
...

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

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

Author: dependabot[bot]

poetry.lock

@@ -10,7 +10,7 @@ pytest = "6.0.2"
 simplejson = "3.17.0"
 semver = "2.13.0"
 pyserial = "3.4"
-pyyaml = "5.3"
+pyyaml = "5.4"
 prometheus-client = "0.7.1"
 requests = "2.22.0"
 pytest-timeout = "1.3.4"