Update required secrets?

Optional fields.

Don't import things we don't need.

Use config.

Provide prior default.

Import sorting.

Ignore type error.

Add return type annotation.

Make mypy "happy" and me "sad".

Read value from credentials.

Fix get_aws_session mock.

Fix another test.

Fix another test.

Fix test looking for valid input.

Remove test, no longer necessary.

Remove unused test.

Fix import order.