build(deps-dev): bump postcss from 8.4.14 to 8.4.23

[dependabot[bot]]

Bumps postcss from 8.4.14 to 8.4.23.

Release notes

Sourced from postcss's releases.

8.4.23

• Fixed warnings in TypeDoc.

8.4.22

• Fixed TypeScript support with node16 (by @​remcohaszing).

8.4.21

• Fixed Input#error types (by @​hudochenkov).

8.4.20

• Fixed source map generation for childless at-rules like @layer.

8.4.19

• Fixed whitespace preserving after AST transformations (by @​romainmenke).

8.4.18

• Fixed an error on absolute: true with empty sourceContent (by @​KingSora).

8.4.17

• Fixed Node.before() unexpected behavior (by @​romainmenke).
• Added TOC to docs (by @​muddv).

8.4.16

• Fixed Root AST migration.

8.4.15

• Fixed AST normalization after using custom parser with old PostCSS AST.

Changelog

Sourced from postcss's changelog.

8.4.23

• Fixed warnings in TypeDoc.

8.4.22

• Fixed TypeScript support with node16 (by Remco Haszing).

8.4.21

• Fixed Input#error types (by Aleks Hudochenkov).

8.4.20

• Fixed source map generation for childless at-rules like @layer.

8.4.19

• Fixed whitespace preserving after AST transformations (by Romain Menke).

8.4.18

• Fixed an error on absolute: true with empty sourceContent (by Rene Haas).

8.4.17

• Fixed Node.before() unexpected behavior (by Romain Menke).
• Added TOC to docs (by Mikhail Dedov).

8.4.16

• Fixed Root AST migration.

8.4.15

• Fixed AST normalization after using custom parser with old PostCSS AST.

Commits

• aa9e03e Release 8.4.23 version
• 691b299 Fix TSDocs
• 8190234 Update dependencies
• 5f8dbdb Move to Node.js 20 on CI
• 7de4860 Release 8.4.22 version
• a9a157a Merge pull request #1815 from remcohaszing/fix-types
• 98de266 Revert unwanted changes
• 4947e3b Fix broken test
• bda836a Remove intermediate classes for default exports
• d33810c Merge branch 'main' into fix-types
• Additional commits viewable in compare view

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