Pydantic 1.10.2 does not support python 3.6

[Reillyhewitson]

Description:
Safety has identified a vulnerability in Pydantic that requires and update to 1.10.2 or greater. Pydantic 1.10.2 does not support python 3.6, which is our minimum version.

Acceptance criteria:

• Decide
  • To drop support for python 3.6
  • or Find an alternative to Pydantic

[MRichards99]

Pasting output from CI (safety job):

Pydantic 1.10.2 prevents long strings as int inputs to fix CVE-2020-10735.
pydantic/pydantic@eccd85e