updated pandas to 2.x

[venu1412]

Description

Updated Pandas

Checklist

• [X] Wrote a description of my changes above
• [X ] Formatted my code with black
• [X] Added a bullet point for my changes to the top of the CHANGELOG.md file
• [X ] Added or modified unit tests to reflect my changes
• [X] Manually tested with a notebook
• [X] If adding a feature, there is an example notebook and/or documentation in the README.md file