deps(deps): bump the langchain group with 3 updates

[dependabot]

Bumps the langchain group with 3 updates: @langchain/anthropic, @langchain/core and @langchain/openai.

Updates @langchain/anthropic from 1.5.11 to 1.5.12

Release notes

Sourced from @​langchain/anthropic's releases.

@​langchain/anthropic@​1.5.12

Patch Changes

• #11707 4109812 Thanks @​richardscarrott! - feat(anthropic): support mid-conversation tool changes. A SystemMessage can now carry Anthropic's tool_addition and tool_removal blocks, either bare in content or wrapped in a non_standard block, and they reach the provider verbatim. The required beta is added automatically: mid-conversation-tool-changes-2026-07-01 for tools named by reference, or inline-tools-2026-09-15 when a tool_addition defines a tool by value (tool: { type: "tool_definition", definition }).

  System content is now narrowed to what Anthropic accepts there. text, tool_addition and tool_removal are sent; any other block is dropped instead of being forwarded for the provider to reject. A system message left with no content is omitted.

Commits

• bc4466b chore: version packages (#11788)
• 4109812 feat(anthropic,openai): support tool changes in system messages (#11707)
• 63ca83e chore(deps): bump hono from 4.13.5 to 4.13.7 (#11786)
• 417ddcf chore: version packages (#11749)
• bbed273 feat(openai): report Responses API file MIME types in model profile (#11771)
• 56a7f0b chore(mcp-adapters): release adapter v2 (#11767)
• 51b3b7b refactor(mcp-adapters): drop config guards that only served 1.x upgrades (#11...
• ab0181f feat(mcp-adapters)!: prefix tool names with the server name by default, and r...
• 347bc0b fix(mcp-adapters): stop cancelled discovery before acquiring another server (...
• ba4e7a2 fix(mcp-adapters): return MCP tool errors as error ToolMessages (#11758)
• Additional commits viewable in compare view

Updates @langchain/core from 1.2.13 to 1.2.14

Release notes

Sourced from @​langchain/core's releases.

@​langchain/core@​1.2.14

Patch Changes

• #11771 bbed273 Thanks @​thushanth-bengre-langchain! - Add fileMimeTypes to ModelProfile so models can advertise the MIME types they accept as generic file inputs. OpenAI Responses API models now report the file types input_file supports; Chat Completions profiles are unchanged.

Commits

• 417ddcf chore: version packages (#11749)
• bbed273 feat(openai): report Responses API file MIME types in model profile (#11771)
• 56a7f0b chore(mcp-adapters): release adapter v2 (#11767)
• 51b3b7b refactor(mcp-adapters): drop config guards that only served 1.x upgrades (#11...
• ab0181f feat(mcp-adapters)!: prefix tool names with the server name by default, and r...
• 347bc0b fix(mcp-adapters): stop cancelled discovery before acquiring another server (...
• ba4e7a2 fix(mcp-adapters): return MCP tool errors as error ToolMessages (#11758)
• 17b6bba fix(langchain): preserve graph interrupts through tool retries (#11649)
• 13283cd feat(mcp-adapters): accept token AuthProviders and keep auth failures retryab...
• 7a02156 feat(mcp-adapters): langgraph elicitation by default (#11716)
• Additional commits viewable in compare view

Updates @langchain/openai from 1.6.0 to 1.6.2

Release notes

Sourced from @​langchain/openai's releases.

@​langchain/openai@​1.6.2

Patch Changes

• #11707 4109812 Thanks @​richardscarrott! - feat(openai): support additional_tools on the Responses API. An additional_tools block on a SystemMessage, either bare in content or wrapped in a non_standard block, is sent verbatim as a top-level input item preceding the message.

  additional_tools cannot work anywhere else, so it now throws instead of being dropped: on Chat Completions (set useResponsesApi: true), or on any message other than a SystemMessage. Assistant messages are exempt.

• #11707 4109812 Thanks @​richardscarrott! - fix(openai): accept non_standard-wrapped configuration_update and mcp_approval_response blocks. Previously only a bare block in content was hoisted to a top-level Responses API input item; a wrapped block, or one on a message built with contentBlocks, was silently dropped. Chat Completions now also sends the payload of a non_standard block rather than the wrapper.

@​langchain/openai@​1.6.1

Patch Changes

• #11771 bbed273 Thanks @​thushanth-bengre-langchain! - Add fileMimeTypes to ModelProfile so models can advertise the MIME types they accept as generic file inputs. OpenAI Responses API models now report the file types input_file supports; Chat Completions profiles are unchanged.

Commits

• bc4466b chore: version packages (#11788)
• 4109812 feat(anthropic,openai): support tool changes in system messages (#11707)
• 63ca83e chore(deps): bump hono from 4.13.5 to 4.13.7 (#11786)
• 417ddcf chore: version packages (#11749)
• bbed273 feat(openai): report Responses API file MIME types in model profile (#11771)
• 56a7f0b chore(mcp-adapters): release adapter v2 (#11767)
• 51b3b7b refactor(mcp-adapters): drop config guards that only served 1.x upgrades (#11...
• ab0181f feat(mcp-adapters)!: prefix tool names with the server name by default, and r...
• 347bc0b fix(mcp-adapters): stop cancelled discovery before acquiring another server (...
• ba4e7a2 fix(mcp-adapters): return MCP tool errors as error ToolMessages (#11758)
• Additional commits viewable in compare view

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