Python Unified SDK v7.0.5

This is a patch version that updates dependencies.

Note: As of version 7.0.0, the Python SDK requires Python 3.9+.

What's Changed

• Bump pytest-cov from 6.1.1 to 6.2.1
• Bump mypy from 1.16.1 to 1.17.0
• Publish changelog on release

Full Changelog: https://github.com/bitpay/python-bitpay-client/compare/7.0.4...7.0.5