deps: update anthropic requirement from >=1.0.0 to >=1.2.0

[dependabot]

Updates the requirements on anthropic to permit the latest version.

Release notes

Sourced from anthropic's releases.

v1.2.0

1.2.0 (2026-08-27)

Full Changelog: v1.1.0...v1.2.0

Features

• api: beta files/skills namespaces use GA shapes; drop dated beta header pins (9df4565)

Bug Fixes

• aws,bedrock: sign raw request bytes so binary file uploads work (#531) (f50e910)
• ci: resolve assignment aliases in detect-breaking-changes (f2c4925)
• sessions: make event accumulator forward-compatible with new event types (#533) (cbbaf6e)
• tools: let read return a view_range of a file over the size cap (#538) (b68e876)
• tools: preserve exact file bytes in the agent toolset and memory tool (no newline translation) (#540) (56921a8)
• webhooks: require headers to be passed to unwrap() (0baa902)

Documentation

• api: clarify pagination on the organization rate-limit list endpoints (1832b27)

Changelog

Sourced from anthropic's changelog.

1.2.0 (2026-08-27)

Full Changelog: v1.1.0...v1.2.0

Features

• api: beta files/skills namespaces use GA shapes; drop dated beta header pins (9df4565)

Bug Fixes

• aws,bedrock: sign raw request bytes so binary file uploads work (#531) (f50e910)
• ci: resolve assignment aliases in detect-breaking-changes (f2c4925)
• sessions: make event accumulator forward-compatible with new event types (#533) (cbbaf6e)
• tools: let read return a view_range of a file over the size cap (#538) (b68e876)
• tools: preserve exact file bytes in the agent toolset and memory tool (no newline translation) (#540) (56921a8)
• webhooks: require headers to be passed to unwrap() (0baa902)

Documentation

• api: clarify pagination on the organization rate-limit list endpoints (1832b27)

1.1.0 (2026-08-26)

Full Changelog: v1.0.0...v1.1.0

Features

• api: add updates thinking display mode (beta) (eb4a73f)
• api: add missing anthropic-beta values (dbebd15)
• api: add support for Organization API endpoints (5a5b8fc)

Bug Fixes

• docs: correct link for long requests error (#1884) (4474f31), closes #1883
• tools: keep the tool runner going on pause_turn (#343) (ab1ec60)

Chores

• docs: clarify skill version latest support and memory version retention (a754f3b)
• internal: cancel superseded CI runs (c061ab1)
• internal: minor workflow reformat (1569002)
• internal: remove the legacy response API (a48b1dd)
• internal: use import httpx2 directly instead of aliasing as httpx (628d789)

Documentation

... (truncated)

Commits

• 071efb6 release: 1.2.0
• 6d48fd0 docs(api): clarify pagination on the organization rate-limit list endpoints
• 2f564a2 fix(tools): let read return a view_range of a file over the size cap (#538)
• dffb22d fix(tools): preserve exact file bytes in the agent toolset and memory tool (n...
• 932ab4b fix(ci): resolve assignment aliases in detect-breaking-changes
• e541b4d feat(api): beta files/skills namespaces use GA shapes; drop dated beta header...
• 0c1a85a fix(sessions): make event accumulator forward-compatible with new event types...
• 39a670c fix(webhooks): require headers to be passed to unwrap()
• 05532bc fix(aws,bedrock): sign raw request bytes so binary file uploads work (#531)
• 181e2e5 release: 1.1.0
• Additional commits viewable in compare view