Update dependency pytest-cov to v6

This MR contains the following updates:

Package	Type	Update	Change
pytest-cov (changelog)	dev-dependencies	major	^5.0.0 -> ^6.0.0

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• Followed upgrade instructions outlined in docs/DEVELOPMENT_MAINTENANCE.md
• Update Docs with new/updated steps as needed
• Tested and Validated Changes made with supporting info like logs or screenshots from test pipelines

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Upgrade Notices

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