Add postal_code and state to missing fields in the user api

[annagav]

What are the relevant tickets?

N/A

Description (What does it do?)

Adding postal code and state to required fields

How can this be tested?

go to http://mitxonline.odl.local:8013/api/users/me

[github-actions]

OpenAPI Changes

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## Changes for v0.yaml:
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## Changes for v1.yaml:
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## Changes for v2.yaml:
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