Update dependency postcss-cli to v9.1.0 - autoclosed

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss-cli	9.0.1 -> 9.1.0

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Release Notes

postcss/postcss-cli

v9.1.0

Compare Source

• Don't write to files if they're unchanged (#​320, #​417)

v9.0.2

Compare Source

• Switch to picocolors (#​409)
• Remove test files from npm package

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Configuration

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