[Burials] Location of Death update

[TaiWilkin]

Summary

• Updates vets-json-schema and adds handling for new Location of Death format. Previous schema is still supported.

Related issue(s)

• Burial | Update Vets API for form submission va.gov-team#102513
• [Burial] Remove outdated Location of Death schema support va.gov-team#103585 (follow-up issue for after removing flipper)

Testing done

• New code is covered by unit tests
• With burial_location_of_death_update disabled, submit the Burials form. Confirm it submits successfully.
• With burial_location_of_death_update enabled, submit the Burials form. Confirm it submits successfully.

What areas of the site does it impact?

Burials

Acceptance criteria

• I fixed|updated|added unit tests and integration tests for each feature (if applicable).
• No error nor warning in the console.
• Events are being sent to the appropriate logging solution
• Documentation has been updated (link to documentation)
• No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs
• Feature/bug has a monitor built into Datadog (if applicable)
• If app impacted requires authentication, did you login to a local build and verify all authenticated routes work as expected
• I added a screenshot of the developed feature