Bump postcss from 8.2.2 to 8.2.3

[dependabot[bot]]

Bumps postcss from 8.2.2 to 8.2.3.

Release notes

Sourced from postcss's releases.

8.2.3

• Fixed JSON.stringify(Node[]) support (by @mischnic).

Changelog

Sourced from postcss's changelog.

8.2.3

• Fixed JSON.stringify(Node[]) support (by Niklas Mischkulnig).

Commits

• 2b3d229 Release 8.2.3 version
• f0749ca Update dependencies
• bc3c463 Merge pull request #1504 from mischnic/toJSON-array
• 52bcbd4 Cleanup: Typescript
• 5409f8d Cleanup
• d55af6a Fixup tests
• 5c8dcb0 Fix JSON.stringify of an array of nodes
• 77e4b3f Fix spelling check
• 4cbc9da Merge pull request #1501 from zhenmang/patch-3
• e44b7fe Update plugins.md
• Additional commits viewable in compare view

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[samrobbins85]

@dependabot ignore this minor version

[dependabot[bot]]

OK, I won't notify you about version 8.2.x again, unless you re-open this PR or update to a 8.2.x release yourself.