chore(deps): update pnpm/action-setup action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
pnpm/action-setup	action	major	v2 -> v4

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Release Notes

pnpm/action-setup (pnpm/action-setup)

v4

Compare Source

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Configuration

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[github-actions]

🚀 Snapshot Release (alpha)

The latest changes of this PR are available as alpha on npm (based on the declared changesets):

Package	Version	Info
bob-the-bundler	8.0.0-alpha-20250604010520-092e1053f27ec6bf07df17c422ab33975af1957c	npm ↗︎ unpkg ↗︎

[renovate]

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