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

Updates the requirements on [langchain-tests](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-tests==0.3.22...langchain-tests==1.0.0)

---
updated-dependencies:
- dependency-name: langchain-tests
  dependency-version: 1.0.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

libs/langchain-mongodb/pyproject.toml

@@ -39,7 +39,7 @@ dev = [
     "pypdf>=5.0.1",
     "langgraph>=0.2.72",
     "flaky>=3.8.1",
-    "langchain-tests==0.3.22,<1.0",
+    "langchain-tests==1.0.0",
     "pip>=25.0.1",
     "typing-extensions>=4.12.2",
 ]