Drop deprecated Python module pkg_resources

[cclauss]

https://setuptools.pypa.io/en/latest/deprecated/pkg_resources.html

Also fixes the ruff rule PLW0108 issue:
pylib/gyp/mac_tool.py:548:61: PLW0108 Lambda may be unnecessary; consider inlining inner function

A subset of:

• chore(deps): bump the github_actions group with 2 updates #332

[Copilot]

Pull request overview

Updates gyp-next to remove use of the deprecated pkg_resources API and addresses a Ruff lint finding, keeping the CLI behavior intact while aligning with modern Python packaging APIs.

Changes:

• Replace pkg_resources.get_distribution(...).version with importlib.metadata.version(...) for --version.
• Inline an unnecessary lambda (key=lambda v: len(v)) to key=len to satisfy Ruff PLW0108.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
pylib/gyp/__init__.py	Switches version lookup from deprecated pkg_resources to importlib.metadata.version.
pylib/gyp/mac_tool.py	Simplifies max(..., key=...) by inlining len instead of a lambda.

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