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Fix1.7.4

langchain-anthropic 1.7.4

Fixed integration test cassette and addressed handling of SystemMessage. These are maintenance updates ensuring test reliability and proper message handling.

Changes since langchain-anthropic==1.7.3

chore(anthropic): fix integration test cassette (#40790)
release(anthropic): 1.7.4 (#40786)
fix(anthropic): add Opus 5.5 and GPT-6 profile augmentations (#40785)
feat(anthropic,openai): mid-conversation tool changes on SystemMessage (#40758)

anthropicintegrationtestingmessages

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