fix milvus issues

[zc277584121]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Bug fix for milvus.

1. Comma missing
   

2. argument filter is not in the _docsearch.similarity_search(), instead , we can use expr

3. add dependency inrequirements.txt

[vercel]

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[zc277584121]

Hi @dartpain , could you (or anyone) please take a review

[dartpain]

Good pr, thank you.
Can we remove milvius as a dependency please from requirements.txt, as we want to keep it lazy loaded.

[zc277584121]

@dartpain thank you, I have removed it , please review again

[dartpain]

Thank you!

[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 34.02%. Comparing base (0425190) to head (7fd8e57).
Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
application/vectorstore/milvus.py	25.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1407      +/-   ##
==========================================
- Coverage   34.03%   34.02%   -0.02%     
==========================================
  Files          69       69              
  Lines        3376     3377       +1     
==========================================
  Hits         1149     1149              
- Misses       2227     2228       +1     

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[dartpain]

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[dartpain]

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[zc277584121]

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