build(deps): bump langsmith in /validation/ai_checker

Bumps [langsmith](https://github.com/langchain-ai/langsmith-sdk) from 0.6.3 to 0.8.0.
- [Release notes](https://github.com/langchain-ai/langsmith-sdk/releases)
- [Commits](https://github.com/langchain-ai/langsmith-sdk/commits/v0.8.0)

---
updated-dependencies:
- dependency-name: langsmith
  dependency-version: 0.8.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

validation/ai_checker/requirements.txt

@@ -177,9 +177,9 @@ langchain-core==1.2.13 \
     --hash=sha256:b31823e28d3eff1e237096d0bd3bf80c6f9624eb471a9496dbfbd427779f8d82 \
     --hash=sha256:d2773d0d0130a356378db9a858cfeef64c3d64bc03722f1d4d6c40eb46fdf01b
     # via -r validation/ai_checker/requirements.txt.in
-langsmith==0.6.3 \
-    --hash=sha256:33246769c0bb24e2c17e0c34bb21931084437613cd37faf83bd0978a297b826f \
-    --hash=sha256:44fdf8084165513e6bede9dda715e7b460b1b3f57ac69f2ca3f03afa911233ec
+langsmith==0.8.0 \
+    --hash=sha256:12cc4bc5622b835a6d841964d6034df3617bdb912dae0c1381fd0a68a9b3a3ef \
+    --hash=sha256:59fe5b2a56bbbe14a08aa76691f84b49e8675dd21e11b57d80c6db8c08bac2e3
     # via langchain-core
 orjson==3.11.5 \
     --hash=sha256:0522003e9f7fba91982e83a97fec0708f5a714c96c4209db7104e6b9d132f111 \