chore(pip/prod)(deps): bump pyaml from 20.4.0 to 21.10.1 (#217)

Bumps [pyaml](https://github.com/mk-fg/pretty-yaml) from 20.4.0 to 21.10.1.
- [Release notes](https://github.com/mk-fg/pretty-yaml/releases)
- [Commits](https://github.com/mk-fg/pretty-yaml/commits)

---
updated-dependencies:
- dependency-name: pyaml
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

Author: dependabot[bot]

poetry.lock

@@ -8,7 +8,7 @@ license = "MIT"
 [tool.poetry.dependencies]
 python = "^3.6"
 requests = "^2.23"
-pyaml = "^20.4.0"
+pyaml = ">=20.4,<22.0"
 requests-toolbelt = "^0.9.1"
 urllib3 = "^1.26.0"
 tatsu = [