Update langchain-core requirement in /libs/langchain-mongodb

Updates the requirements on [langchain-core](https://github.com/langchain-ai/langchain) to permit the latest version.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-core==0.3.29...langchain-core==1.0.4)

---
updated-dependencies:
- dependency-name: langchain-core
  dependency-version: 1.0.4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

libs/langchain-mongodb/pyproject.toml

@@ -22,7 +22,7 @@ dependencies = [
 dev = [
     "freezegun>=1.2.2",
     "langchain>=0.3.14,<1.0",
-    "langchain-core>=0.3.29,<1.0",
+    "langchain-core>=0.3.29,<2.0",
     "langchain-text-splitters>=0.3.5,<1.0",
     "pytest-mock>=3.10.0",
     "pytest>=7.3.0",