fixing typo and specifying exact range of compatible langchain versions

Author: harsh97

.github/workflows/run-unittests-py38-cov-report.yml

@@ -73,7 +73,7 @@ jobs:
           pip install -e ".[forecast]"
       - name: "Install featurestore marketplace dependencies"
         run: |
-          pip install -e ".[feature-store-marketplace]
+          pip install -e ".[feature-store-marketplace]"
       - name: "Run unitary tests folder with maximum ADS dependencies"
         timeout-minutes: 40
         shell: bash

ads/llm/requirements.txt

@@ -1,3 +1,3 @@
-langchain>=0.0.295
+langchain>=0.0.295,<0.0.350
 pydantic>=1.10.13,<3
 typing-extensions>=4.2.0