fix dashscope high version problem

[better629]

Features

dashscope==1.14.1 works well but fails with dashscope~=1.19.3, to fix

• example/hello_world.py passed

Feature Docs

Influence

#1367

Result

Other

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 62.55%. Comparing base (325e452) to head (c023a23).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
metagpt/provider/dashscope_api.py	0.00%	5 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1496      +/-   ##
==========================================
- Coverage   62.56%   62.55%   -0.01%     
==========================================
  Files         287      287              
  Lines       17602    17604       +2     
==========================================
  Hits        11012    11012              
- Misses       6590     6592       +2     

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