feat: replace poetry with uv and drop python 3.9

[danfimov]

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[Copilot]

Pull Request Overview

This PR modernizes the project infrastructure by replacing Poetry with uv for dependency management and dropping Python 3.9 support. The changes include updating type annotations to use Python 3.10+ syntax (PEP 604 union types, built-in generics) and migrating all build/CI tooling to uv.

Key Changes

• Dropped Python 3.9 support, now requiring Python 3.10+
• Replaced Poetry with uv for dependency management and builds
• Updated type annotations to modern Python 3.10+ syntax (X | None instead of Optional[X], dict instead of Dict, etc.)
• Migrated CI/CD workflows from Poetry to uv commands

Reviewed Changes

Copilot reviewed 85 out of 87 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
pyproject.toml	Updated build backend to uv_build, bumped minimum Python to 3.10, updated dependency versions, added Python 3.10 target for mypy
tox.ini	Replaced poetry commands with uv sync/run equivalents, removed py39 test environment
.python-version	Removed Python 3.9.21
.pre-commit-config.yaml	Updated hooks to use uv run instead of poetry run
.github/workflows/test.yml	Migrated from Poetry to uv, updated Python version matrix, fixed lint matrix formatting
.github/workflows/release.yml	Migrated release process to use uv build/publish with trusted publishing
docs/contrib.md	Updated documentation to reference uv instead of Poetry
taskiq/**/*.py	Modernized type annotations: Optional[X] → X | None, Dict → dict, List → list, typing imports → collections.abc
tests/**/*.py	Same type annotation modernizations as main code
docs/examples/**/*.py	Same type annotation modernizations, removed unnecessary noqa comments

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