chore(deps): update dependency postcss to v8.4.31

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss (source)	8.4.29 -> 8.4.31

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Release Notes

postcss/postcss (postcss)

v8.4.31

Compare Source

• Fixed \r parsing to fix CVE-2023-44270.

v8.4.30

Compare Source

• Improved source map performance (by Romain Menke).

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Configuration

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (a9756a2) 100.00% compared to head (ad2549f) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #639   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          405       405           
  Branches        56        56           
=========================================
  Hits           405       405           

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