Add missing dependency

Author: james-gray

Pipfile

@@ -10,6 +10,7 @@ asyncmock = "*"
 bandit = "*"
 black = "==19.10b0"
 coveralls = "*"
+importlib-metadata = "*"
 invoke = "*"
 isort = "*"
 pylint = "*"
@@ -21,8 +22,10 @@ pytest-cov = "*"
 aiohttp = "*"
 asyncache = "*"
 cachetools = "*"
+dataclasses = "*"
 fastapi = "*"
 gunicorn = "*"
+idna_ssl = "*"
 python-dateutil = "*"
 python-dotenv = "*"
 requests = "*"