Merge pull request #142 from p1c2u/feature/drop-pyrsistent-direct-dependency

Drop pyrsistent direct dependency

Author: p1c2u

poetry.lock

@@ -34,7 +34,6 @@ classifiers = [
 [tool.poetry.dependencies]
 jsonschema = ">=3.2.0, <5.0.0"
 openapi-schema-validator = "^0.2.0"
-pyrsistent = "<0.17.0"
 python = "^3.7.0"
 PyYAML = ">=5.1"
 requests = {version = "*", optional = true}