build(deps): update langchain-core requirement from >=1.5.3 to >=1.5.4

[dependabot]

Updates the requirements on langchain-core to permit the latest version.

Release notes

Sourced from langchain-core's releases.

langchain-core==1.5.4

Changes since langchain-core==1.5.3

release(core): 1.5.4 (#39592) fix(core): compat with pydantic 2.14 (#39328) fix(core): stop StructuredPrompt from mutating caller kwargs (#39174) fix(core): preserve flat tool args schema for RootModel runnables (#39307) fix(core): close internally created event loops in streaming tracers (#39222) chore: bump the minor-and-patch group across 3 directories with 7 updates (#39187) fix(core): preserve OpenAI file blocks (#39205) fix(core): document reserved argument names for tools (#39207) fix(core): handle injected args for subclasses of BaseTool (#39202) fix(core): respect include_injected=False with filter_args (#39200) fix(core): redact streaming callback options (#39179) fix(core): type text stream projections (#39170) chore(infra): add missing LICENSE files to publishable packages (#39146)

Commits

• 5ff19c6 release(core): 1.5.4 (#39592)
• 1925966 feat(langchain): expose trace_policy on AgentMiddleware (#38910)
• ce8e8bd chore(model-profiles): refresh model profile data (#39579)
• a2a9b1b fix(anthropic): report reasoning tokens in usage metadata (#39590)
• 39b4e0f chore(langchain): fix type errors in tests (#39589)
• f78df6d chore(model-profiles): refresh model profile data (#39430)
• 56daacc release(openai): 1.4.3 (#39485)
• 24e8d2b chore(model-profiles): refresh model profile data (#39344)
• 9b4ef2a fix(openai): filter invalid tool calls from content (#39366)
• 9f738f5 fix(core): compat with pydantic 2.14 (#39328)
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