Update panther-analysis-tool to v1.6.2

[panther-bot-automation]

Automated dependency update to panther-analysis-tool v1.6.2

[cursor]

PR Summary

Low Risk
Dependency-only bump with lockfile refresh; no product code changes in the diff, though transitive upgrades may affect local CI or PAT behavior.

Overview
Bumps panther-analysis-tool from 1.6.1 to 1.6.2 in Pipfile and refreshes Pipfile.lock so installs pin the new release and its resolved dependency tree.

The lockfile also picks up newer transitive versions (for example boto3/botocore, sqlfluff, cryptography, moto, mypy, and various CLI/support packages); pytest no longer lists a PyPI index entry in the default section. No application or detection rule source changes appear in this diff.

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