build(deps-dev): bump postcss from 7.0.26 to 8.2.10 (#2883)

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.26 to 8.2.10.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/7.0.26...8.2.10)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -101,7 +101,7 @@
     "npm-run-all": "4.1.5",
     "onchange": "4.1.0",
     "pacote": "9.5.12",
-    "postcss": "7.0.26",
+    "postcss": "8.2.10",
     "postcss-dir-pseudo-class": "^5.0.0",
     "postcss-logical": "^4.0.2",
     "postcss-safe-important": "1.2.0",