Python linting through ruff

[kieran-ryan]

Replace flake8 with ruff for linting Python code.

Context

• Closes Add Flake8 problem matcher #511

• Formats and enforces quote formatting - which was configured within the preceding flake8 configuration file though required flake8 plugins which were not declared within the repository or linted within CI - so thus required fixing. Automatically applied using ruff check --select=Q --fix.

Replace flake8 with ruff for linting Python code.

See ruff's default configuration for documentation on default rule disparity with flake8.

# Ruff's default configuration - https://docs.astral.sh/ruff/configuration/
[tool.ruff.lint]
# Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`) codes by default.
# Unlike Flake8, Ruff doesn't enable pycodestyle warnings (`W`) or
# McCabe complexity (`C901`) by default.
select = ["E4", "E7", "E9", "F"]

• Automated linting fixes.
• pyproject.toml support
• Monorepo support
  • Respects configuration from root and within each package - run poe linter or ruff check from any location
  • IDE support during development - rather than relying on disparities between local task runs, CI, etc.
• Multiple times faster
• Hundreds of rules, without requiring external plugins and dependencies
  • Can subsequently be extended for formatting and other linting criteria - though scoped to parity with this pull request
• and more

Dropped legacy Jenkins linting configuration.

Checklist

• Sign Allure CLA