Update API specifications with fern api update

[github-actions]

Update API specifications by running fern api update.

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Note

Medium Risk
Although this is a spec-only change, it updates auth/session- and permission-related contracts (OAuth actions/scopes, new 403 responses, session fields), which can break clients and requires careful rollout.

Overview
Regenerates openapi.json with new OAuth-related audit/action types (consent grant/deny) and OAuth session contract updates (adds OAuthScope, plus clientId, landscapeId, and scopes on UserSession, and performedByClientId on actions).

Updates several public API contracts and behaviors: adds cursor pagination (cursor, limit, nextCursor, x-fern-pagination) to modelObjects/modelConnections list endpoints; adds a PATCH shareLinkUpdate endpoint and adjusts share-link options (new adrId, additional modes); introduces DiagramContentGenerateDescriptionFilter and maxWidth for diagram image export.

Tightens/extends schemas and security: makes multiple import schemas additionalProperties: false, allows CatalogTechnology.status to be nullable for private technologies, adds Organization.aiModel, oauthLandscapeWriteEnabled, and billingMonthlyCost, and changes /catalog/suggestion/brand to require auth while adding many 403 Forbidden responses across endpoints.

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