Validate pandas version 3.0.0

[thorrester]

Pandas v3.0.0 was recently released and may introduce breaking changes for any Scouter logic that supports Pandas DataFrames.

Tasks

• Update pandas dependency to v3.0.0
• Run and update existing pytest tests to ensure compatibility
• Audit all Scouter code paths that accept/process Pandas DataFrames for breaking changes
• Add conditional version logic where necessary (e.g. behavior differences between pandas 2.x and 3.x)

Notes

• Affected areas likely include DataProfiler, Drifter, and any queue/client code that accepts DataFrames as input
• Check for changes to DataFrame internals, copy-on-write semantics, dtype handling, and deprecated APIs that were removed in v3