Bump postcss from 8.4.28 to 8.4.32

[dependabot[bot]]

Bumps postcss from 8.4.28 to 8.4.32.

Release notes

Sourced from postcss's releases.

8.4.32

• Fixed postcss().process() types (by @​ferreira-tb).

8.4.31

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

8.4.30

• Improved source map performance (by @​romainmenke).

8.4.29

• Fixed Node#source.offset (by @​idoros).
• Fixed docs (by @​coliff).

Changelog

Sourced from postcss's changelog.

8.4.32

• Fixed postcss().process() types (by Andrew Ferreira).

8.4.31

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

8.4.30

• Improved source map performance (by Romain Menke).

8.4.29

• Fixed Node#source.offset (by Ido Rosenthal).
• Fixed docs (by Christian Oliff).

Commits

• a0d9f10 Release 8.4.32 version
• 0146b3e Add Node.js 21 to CI
• 2398534 Update dependencies
• 1918533 Merge pull request #1902 from ferreira-tb/main
• 395e6dc Fix ProcessOptions interface
• fa8cd15 Update dependencies
• 199a7c4 Typo
• 2528047 Update EM link
• 90208de Release 8.4.31 version
• 58cc860 Fix carrier return parsing
• Additional commits viewable in compare view

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:point_left: Launch a Binder on branch _jupyter/nbgrader/dependabot/npm_andyarn/postcss-8.4.32