fix(deps): update dependency stagehand to v3.19.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
stagehand	~=3.5.0 → ~=3.19.0
stagehand	==3.5.0 → ==3.19.0
stagehand	~=0.5.7 → ~=3.19.0

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Release Notes

browserbase/stagehand-python (stagehand)

v3.19.0

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Full Changelog: v3.18.0...v3.19.0

Features

• internal: implement indices array format for query and form serialization (b2cccf5)

v3.18.0

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Full Changelog: v3.18.0...v3.19.0

Features

• internal: implement indices array format for query and form serialization (b2cccf5)

v3.7.0

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Full Changelog: v3.7.0...v3.18.0

Features

• Add explicit SSE event names for local v3 streaming (493abf4)
• Include LLM headers in ModelConfig (b0df6bc)

Chores

• ci: skip lint on metadata-only changes (4049e44)
• internal: update gitignore (5acaa6f)

v3.6.0

Compare Source

Full Changelog: v3.6.0...v3.7.0

Features

• [fix]: add useSearch & toolTimeout to stainless types (0faf1df)
• [STG-1607] Yield finished SSE event instead of silently dropping it (0bba1e9)
• Add bedrock to provider enum in Zod schemas and OpenAPI spec (5ace8c9)
• Add missing cdpHeaders field to v3 server openapi spec (7c17bc2)
• Revert broken finished SSE yield config (21189cf)
• variables for observe (93ef310)

Bug Fixes

• deps: bump minimum typing-extensions version (c8cce20)
• pydantic: do not pass by_alias unless set (b045b1a)
• sanitize endpoint path params (5201ec1)

Chores

• ci: bump uv version (84a841c)
• ci: skip uploading artifacts on stainless-internal branches (291b296)
• internal: tweak CI branches (1d33bbf)

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