langchain-core גרסה 1.5.2

תקציר מקורי באנגלית<p>Changes since langchain-core==1.5.1</p> <p>release(core): 1.5.2 (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="5000774647" data-permission-text="Title is private" data-url="https://github.com/langchain-ai/langchain/issues/39108" data-hovercard-type="pull_request" data-hovercard-url="/langchain-ai/langchain/pull/39108/hovercard" href="https://github.com/langchain-ai/langchain/pull/39108">#39108</a>)<br> fix(core): handle empty string in gateway env vars (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="4998897378" data-permission-text="Title is private" data-url="https://github.com/langchain-ai/langchain/issues/39107" data-hovercard-type="pull_request" data-hovercard-url="/langchain-ai/langchain/pull/39107/hovercard