fix transient test failures by increasing timeout for gbm shap method

[imatiach-msft]

Description

Fix transient test failures by increasing timeout for gbm shap method.

Checklist

• I have added screenshots above for all UI changes.
• I have added e2e tests for all UI changes.
• Documentation was updated if it was needed.

[codecov-commenter]

Codecov Report

Merging #2044 (45c6825) into main (0af6cef) will decrease coverage by 0.56%.
The diff coverage is n/a.

❗ Current head 45c6825 differs from pull request most recent head 4a9dd3a. Consider uploading reports for the commit 4a9dd3a to get more accurate results

@@            Coverage Diff             @@
##             main    #2044      +/-   ##
==========================================
- Coverage   93.63%   93.08%   -0.56%     
==========================================
  Files          31       51      +20     
  Lines         581     2009    +1428     
==========================================
+ Hits          544     1870    +1326     
- Misses         37      139     +102     

Flag	Coverage Δ
unittests	93.08% <ø> (-0.56%)	⬇️

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see 20 files with indirect coverage changes

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[github-actions]

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[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/ilmat/increase-to-gbm-ea/dashboard/index.html