Update vespa test schema

[olaughter]

Description

This updates the schema for our test instance of vespa. This is used for tests in CI, so tests passing here gives us confidence in the changes we are making to our live instances. See:

• https://github.com/climatepolicyradar/navigator-infra/pull/684
• https://github.com/climatepolicyradar/navigator-infra/pull/686

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How Has This Been Tested?

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[linear]

PLA-68 Update schema & tests in the sdk

[jesse-c]

LGTM

Could do with a better PR description!