Major upgrade: Python 3.14, Pydantic v2, Ruff linter, and library updates

[jashparekh]

• Remove support for Python 3.8 and 3.9, add support for Python 3.10-3.14
• Update Dockerfiles to use Python 3.14
• Replace pip with uv package manager for faster dependency resolution
• Upgrade Pydantic from v1 to v2.12.3 and fix all compatibility issues
• Upgrade all core dependencies to latest versions:
  • google-cloud-bigquery: 3.38.0
  • google-api-core: 2.28.1
  • google-auth: 2.42.1
• Replace black, isort, flake8, and autoflake with ruff for unified linting/formatting
• Move bandit configuration from .bandit to pyproject.toml
• Update CI workflow to use ruff and support Python 3.10-3.14
• Fix SchemaField API compatibility with google-cloud-bigquery 3.x
• Fix QueryJob instantiation in tests for google-cloud-bigquery 3.x
• Fix REPEATED mode detection for list-based schema fields
• Update requirements.lock with new dependencies
• Bump version to 1.1.0

[codecov]

Codecov Report

❌ Patch coverage is 98.71795% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 96.64%. Comparing base (fc8954f) to head (b9ab103).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
gbq/dto.py	97.82%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #572      +/-   ##
==========================================
+ Coverage   96.50%   96.64%   +0.13%     
==========================================
  Files           5        5              
  Lines         315      328      +13     
  Branches       53       43      -10     
==========================================
+ Hits          304      317      +13     
  Misses          5        5              
  Partials        6        6              

Files with missing lines	Coverage Δ
gbq/__init__.py	100.00% <100.00%> (ø)
gbq/bigquery.py	94.33% <100.00%> (-0.04%)	⬇️
gbq/helpers.py	98.61% <100.00%> (+0.10%)	⬆️
gbq/dto.py	98.90% <97.82%> (+0.12%)	⬆️

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