fix: Fix flaky langchain notebook test

[BrendanWalsh]

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[mhamilton723]

/azp run

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.61%. Comparing base (6c95bf0) to head (76577b2).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2366      +/-   ##
==========================================
+ Coverage   83.30%   84.61%   +1.30%     
==========================================
  Files         331      331              
  Lines       17180    17180              
  Branches     1544     1544              
==========================================
+ Hits        14312    14536     +224     
+ Misses       2868     2644     -224     

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[mhamilton723]

/azp run

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Azure Pipelines successfully started running 1 pipeline(s).