v2026.02.2

Modified deprecation mechanism to support python 3.11

What's Changed

• downgrade to DeprecationWarning since deprecated decorator is not supported in 3.11
• correct python matrix version usage in CI
• move from flake8 to ruff for linting
• fix pre-existing lint issues
• set builds to fail on lint failures

Full Changelog: 2026.02.1...2026.02.2