ref: remove PickledObjectField from Authenticator model

[asottile-sentry]

No description provided.

[github-actions]

This PR has a migration; here is the generated SQL for src/sentry/migrations/0927_no_pickle_authenticator.py

for 0927_no_pickle_authenticator in sentry

--
-- Alter field config on authenticator
--
-- (no-op)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #93515   +/-   ##
=======================================
  Coverage   88.01%   88.02%           
=======================================
  Files       10326    10325    -1     
  Lines      595626   595641   +15     
  Branches    23126    23126           
=======================================
+ Hits       524268   524288   +20     
+ Misses      70865    70860    -5     
  Partials      493      493           

[github-actions]

This PR has a migration; here is the generated SQL for src/sentry/migrations/0929_no_pickle_authenticator.py

for 0929_no_pickle_authenticator in sentry

--
-- Alter field config on authenticator
--
-- (no-op)
--
-- Raw SQL operation
--

            ALTER TABLE auth_authenticator ALTER COLUMN config TYPE jsonb USING config::jsonb;