deps: pin pandas version

[Gaiejj]

Description

Pin the version of pandas as 2.0.3.

Motivation and Context

Since the seaborn host in pypi do not support the latest version of pandas, some warning may arise in Python version higher than 3.9, like:

FAILED test_policy.py::test_workflow_for_training[algo(PPO)] - FutureWarning: is_categorical_dtype is deprecated and will be removed in a future version. Use isinstance(dtype, CategoricalDtype) instead
FAILED test_policy.py::test_workflow_for_training[algo(SAC)] - FutureWarning: is_categorical_dtype is deprecated and will be removed in a future version. Use isinstance(dtype, CategoricalDtype) instead
FAILED test_policy.py::test_workflow_for_training[algo(PPOLag)] - FutureWarning: is_categorical_dtype is deprecated and will be removed in a future version. Use isinstance(dtype, CategoricalDtype) instead

For more details please refer to here.

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds core functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (update in the documentation)

Checklist

Go over all the following points, and put an x in all the boxes that apply.
If you are unsure about any of these, don't hesitate to ask. We are here to help!

• I have read the CONTRIBUTION guide. (required)
• My change requires a change to the documentation.
• I have updated the tests accordingly. (required for a bug fix or a new feature)
• I have updated the documentation accordingly.
• I have reformatted the code using make format. (required)
• I have checked the code using make lint. (required)
• I have ensured make test pass. (required)

[codecov]

Codecov Report

Merging #276 (79c60e8) into main (368f84d) will decrease coverage by 0.01%.
The diff coverage is n/a.

❗ Current head 79c60e8 differs from pull request most recent head 37d380b. Consider uploading reports for the commit 37d380b to get more accurate results

@@            Coverage Diff             @@
##             main     #276      +/-   ##
==========================================
- Coverage   97.01%   97.00%   -0.01%     
==========================================
  Files         138      138              
  Lines        6991     6991              
==========================================
- Hits         6782     6781       -1     
- Misses        209      210       +1     

see 1 file with indirect coverage changes

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[muchvo]

LGTM.