[Improvement] Fix deprecation warnings

[deshraj]

Description

Seeing some warnings from langchain about call getting deprecated from version 0.2.0. Fixed that warning in this PR.

Type of change

• Refactor (does not change functionality, e.g. code style improvements, linting)

How Has This Been Tested?

• Unit Test

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 56.44%. Comparing base (752f638) to head (4ca45a7).
Report is 1 commits behind head on main.

Files	Patch %	Lines
embedchain/llm/vllm.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1288   +/-   ##
=======================================
  Coverage   56.44%   56.44%           
=======================================
  Files         151      151           
  Lines        6110     6110           
=======================================
  Hits         3449     3449           
  Misses       2661     2661           

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