Bump langchain-core from 1.2.16 to 1.2.19 (#873)

Bumps [langchain-core](https://github.com/langchain-ai/langchain) from
1.2.16 to 1.2.19.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/langchain-ai/langchain/releases">langchain-core's
releases</a>.</em></p>
<blockquote>
<h2>langchain-core==1.2.19</h2>
<p>Changes since langchain-core==1.2.18</p>
<p>release(core): 1.2.19 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35832">#35832</a>)
chore(core): move BaseCrossEncoder to langchain-core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35809">#35809</a>)
chore: bump tornado from 6.5.2 to 6.5.5 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35775">#35775</a>)</p>
<h2>langchain-core==1.2.18</h2>
<p>Changes since langchain-core==1.2.17</p>
<p>release(core): 1.2.18 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35704">#35704</a>)
fix(core): fix double backticks in deprecation docstring for
alternative_import (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35658">#35658</a>)
fix(core): preserve default_factory when generating tool call schema (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35550">#35550</a>)
feat(openai): support tool search (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35582">#35582</a>)
chore: bump the minor-and-patch group across 3 directories with 7
updates (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35605">#35605</a>)</p>
<h2>langchain-core==1.2.17</h2>
<p>Changes since langchain-core==1.2.16</p>
<p>release(core): 1.2.17 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35527">#35527</a>)
fix(core): extract usage metadata from serialized tracer message outputs
(<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35526">#35526</a>)
chore: bump the langchain-deps group across 3 directories with 7 updates
(<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35513">#35513</a>)
chore: bump the langchain-deps group across 3 directories with 14
updates (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35441">#35441</a>)</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/langchain-ai/langchain/commit/41cca203e633d8506b563f263b005cb52909300d"><code>41cca20</code></a>
release(core): 1.2.19 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35832">#35832</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/307cdcac9e4e3d7cdcc86eeb3a4688b486f8e1d8"><code>307cdca</code></a>
chore(core): move BaseCrossEncoder to langchain-core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35809">#35809</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/cee6430b1cd2530cdebcdb8820ed4ebf700556a4"><code>cee6430</code></a>
refactor(xai): remove redundant <code>lc_attributes</code> override (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35791">#35791</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/6b9b4c6546332346b787f337b92879fc9b6b530c"><code>6b9b4c6</code></a>
feat(xai): support <code>base_url</code> alias and
<code>XAI_API_BASE</code> env var (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35790">#35790</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/b676167707b9c8e27feef7e58a11edb0fe011703"><code>b676167</code></a>
fix(deepseek): accept <code>base_url</code> as alias for
<code>api_base</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35789">#35789</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/5d9568b5f5a94ef21bee094f38694415e099ed73"><code>5d9568b</code></a>
feat(model-profiles): new fields + <code>Makefile</code> target (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35788">#35788</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/1891d414beceeef8e23a05e9e8f6011ccbf4d8b2"><code>1891d41</code></a>
chore: bump tornado from 6.5.2 to 6.5.5 in /libs/text-splitters (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35774">#35774</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/1d954bccfad779097f63688b324f82fed48f4c5e"><code>1d954bc</code></a>
chore: bump tornado from 6.5.2 to 6.5.5 in /libs/langchain (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35773">#35773</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/261b1d57e40b8470673d923b925aeed58415bc59"><code>261b1d5</code></a>
chore: bump tornado from 6.5.2 to 6.5.5 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35775">#35775</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/9521c679db9641912b97297d434adc8d000b5a9c"><code>9521c67</code></a>
fix(openai): close PIL Image handles in token counting to prevent fd
leak (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/3">#3</a>...</li>
<li>Additional commits viewable in <a
href="https://github.com/langchain-ai/langchain/compare/langchain-core==1.2.16...langchain-core==1.2.19">compare
view</a></li>
</ul>
</details>
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poetry.lock

@@ -1534,14 +1534,14 @@ test = ["hatch", "ipykernel", "openapi-core (>=0.18.0,<0.19.0)", "openapi-spec-v
 
 [[package]]
 name = "langchain-core"
-version = "1.2.16"
+version = "1.2.19"
 description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0.0,>=3.10.0"
 groups = ["main"]
 files = [
-    {file = "langchain_core-1.2.16-py3-none-any.whl", hash = "sha256:2768add9aa97232a7712580f678e0ba045ee1036c71fe471355be0434fcb6e30"},
-    {file = "langchain_core-1.2.16.tar.gz", hash = "sha256:055a4bfe7d62f4ac45ed49fd759ee2e6bdd15abf998fbeea695fda5da2de6413"},
+    {file = "langchain_core-1.2.19-py3-none-any.whl", hash = "sha256:6e74cb0fb443a8046ee298c05c99b67abe54cc57fcbc6d1cd3b0f2485ee47574"},
+    {file = "langchain_core-1.2.19.tar.gz", hash = "sha256:87fa82c3eb4cc3d7a65f574cb447b5df09ec2131c8c2a0a02d4737ad02685438"},
 ]
 
 [package.dependencies]