[LuisFigueroaG]

Summary

The VPC Lattice v2 schema declared four identity fields with keys AWS doesn't send (principalOrgId, X509SubjectCn, X509IssuerOu, X509SanNameCn). Since the fields are optional and Zod strips unknown keys, the values in real events were silently dropped. This corrects them to the spellings in the AWS documentation, same as the Python fix in aws-powertools/powertools-lambda-python#8628.

Changes

• packages/parser/src/schemas/vpc-latticev2.ts: rename the keys to principalOrgID, x509SubjectCn, x509IssuerOu and x509SanNameCn. x509SanDns and x509SanUri are unchanged, all identity fields stay optional, and no aliases are kept for the old keys.
• packages/parser/tests/unit/schema/vpc-latticev2.test.ts: add the tests from the issue (all documented identity fields preserved, an empty identity, and a non-string value rejected for each corrected key). Only formatting changed, from biome format.
• VpcLatticeEventV2 is still inferred from the schema, so the type picks up the new keys.

Unit tests with 100% coverage, type tests and biome ci pass for the parser package. The new tests fail on main.

Issue number: closes #5842

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[powertools-for-aws-oss-automation]

Awesome work, congrats on your first merged pull request and thank you for helping improve everyone's experience!