fix: upgrade shx package to get rid of security warning

[HuihuiWu-Microsoft]

ADO: https://msazure.visualstudio.com/Microsoft%20Teams%20Extensibility/_workitems/edit/36951967

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.29%. Comparing base (90530f0) to head (f71fe49).
⚠️ Report is 2 commits behind head on release/6.5.

Additional details and impacted files

@@              Coverage Diff              @@
##           release/6.5   #15394    +/-   ##
=============================================
  Coverage        89.29%   89.29%            
=============================================
  Files              620      620            
  Lines            38068    38068            
  Branches          7739     7577   -162     
=============================================
  Hits             33992    33992            
  Misses            1973     1973            
  Partials          2103     2103            

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