langchain-core גרסה 1.5.1

תקציר מקורי באנגלית<p>Changes since langchain-core==1.5.0</p> <p>release(core): 1.5.1 (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="4962367138" data-permission-text="Title is private" data-url="https://github.com/langchain-ai/langchain/issues/39042" data-hovercard-type="pull_request" data-hovercard-url="/langchain-ai/langchain/pull/39042/hovercard" href="https://github.com/langchain-ai/langchain/pull/39042">#39042</a>)<br> feat(anthropic,fireworks,openai): support langsmith gateway through env var (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="4847283503" data-permission-text="Title is private" data-url="https://github.com/langchain-ai/langchain/issues/38742" data-hovercard-type="pull_request" data-hovercard-url="/langchain-ai/langc