chore(deps): update dependency anthropic to v1.6.0

[knostic-renovate]

This PR contains the following updates:

Package	Update	Change
anthropic	minor	==1.5.0 -> ==1.6.0

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Release Notes

anthropics/anthropic-sdk-python (anthropic)

v1.6.0

Compare Source

Full Changelog: v1.5.0...v1.6.0

Features

• api: add auto mode tool permissions for Managed Agents (909d92f)
• api: add compaction parameter and signed compaction blocks (beta) (8689179)
• api: add enum types for workspace data-residency geo fields (3dc6dbf)
• api: add thinking_mismatch_allowed entries to input_transformations (beta) (14d1792)
• api: add url_sources to the web fetch tool (4ba7115)
• api: add workspace_id parameter to user profiles methods (1c359b2)
• client: support async credential token providers (95e93f7)

Bug Fixes

• api: mark usage iteration model as nullable (520d000)
• api: use one input transformation type for message and delta event (ae86d7d)
• client: honor Retry-After values above 60 seconds (2d03ba2)
• client: ignore invalid Retry-After values and validate maxRetries (909d92f)
• client: retry connection errors in the async client and stop blocking in the coroutine retry loop (909d92f)
• client: use the default backoff when Retry-After is out of range (3d15f04)

Chores

• deps: bump aiohttp, pygments and pytest in the dev lockfile (005ad11)
• deps: require anyio 4.1 or later (79b4175)
• docs: clarify that session_thread_id on tool use events is informational (2ac7b60)
• docs: correct the compaction beta's parameter descriptions (5048c9a)
• internal: sort the imports in beta_message.py (0a92f91)
• tests: define the model tests' type alias at module level (98c3a7a)
• tests: stop the mock server without failing a passing test run (d28aea7)

Documentation

• api: clarify usage.iterations entry typing under server-side fallback (bb06629)
• stop documenting unions with their first variant's description (7a94250)
• use markdown formatting in most docstrings (25f344f)

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