chore: 🐝 Update SDK - Generate 0.15.4

[github-actions]

SDK update

Versioning

Version Bump Type: [patch] - 🤖 (automated)

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If updates to your OpenAPI document introduce breaking changes, be sure to update the info.version field to trigger the correct version bump.
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OpenAPI Change Summary

├─┬Info
│ └──[🔀] version (15430:12)
├─┬Paths
│ └──[+] path (20436:3)
└─┬Components
  ├──[+] schemas (15076:7)
  ├──[+] schemas (15198:7)
  ├──[+] schemas (15086:7)
  └──[+] schemas (10475:7)

Document Element	Total Changes	Breaking Changes
paths	1	0
components	4	0
info	1	0

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Linting Report

0 errors, 0 warnings, 25 hints

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PYTHON CHANGELOG

core: 6.0.35 - 2026-07-17

🐛 Bug Fixes

• preserve nullable discriminated-union request fields under Pydantic 2.13 by wrapping optional+nullable closed discriminated-union fields in SerializeAsAny, and lift the now-unnecessary Pydantic <2.13 cap (commit by @AshGodfrey)

unions: 3.1.8 - 2026-07-17

🐛 Bug Fixes

• preserve nullable discriminated-union request fields under Pydantic 2.13 by wrapping optional+nullable closed discriminated-union fields in SerializeAsAny, and lift the now-unnecessary Pydantic <2.13 cap (commit by @AshGodfrey)

Based on Speakeasy CLI 1.791.1

Last updated by Speakeasy workflow