Bump postcss from 8.2.5 to 8.2.6

Created by: dependabot[bot]

Bumps postcss from 8.2.5 to 8.2.6.

Release notes

Sourced from postcss's releases.

8.2.6

• Fixed Maximum call stack size exceeded in Node#toJSON.
• Fixed docs (by @inokawa).

Changelog

Sourced from postcss's changelog.

8.2.6

• Fixed Maximum call stack size exceeded in Node#toJSON.
• Fixed docs (by inokawa).

Commits

• 9fe29cc Release 8.2.6 version
• d00b35d Update dependebcies
• 5797a43 Fix Node#toJSON and proxyCache
• faac7d0 Merge pull request #1525 from inokawa/patch-1
• 35865b8 Fix typo in doc
• 416b3b9 Fix changelog note
• See full diff in compare view

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