chore(deps): 2 actionable changes: (1) setuptools lower bound bumped to modern minimu

[isagoakira]

🔧 依赖维护更新 — nvbn/thefuck

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📋 更新摘要

2 actionable changes: (1) setuptools lower bound bumped to modern minimum; since it uses >= not an exact pin, pip will resolve latest anyway — harmless but honest. (2) The mock package is redundant on Python 3.3+ (built into unittest.mock) and is deprecated. Also note: setup.py pins decorator<5 and pyte<0.8.1 for Python 2.7, which is dead — those upper-bound guards are obsolete but removing them is not strictly a version bump, so left unchanged per rule 2.

📦 变更清单

🔴 setuptools: >=17.1 → >=70.0.0
>=17.1 is a 9+ year old floor; setuptools is now at 75.x with security/CVE fixes and modern build improvements

🔴 mock: unpinned → remove (use unittest.mock)
The standalone mock package is deprecated; unittest.mock is built into Python 3.3+ and pytest's pytest-mock wraps it. No longer needed in modern environments.

⚠️ 风险等级

🟢 Low

📝 文件变更

• requirements.txt
• setup.py

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