Bump postcss from 8.5.6 to 8.5.8

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.6 to 8.5.8.
- [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/8.5.6...8.5.8)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

package-lock.json

@@ -11,7 +11,7 @@
 				"autoprefixer": "^10.4.23",
 				"cjs-loader": "^0.1.0",
 				"lunr": "^2.3.9",
-				"postcss": "^8.5.5",
+				"postcss": "^8.5.8",
 				"postcss-cli": "^11.0.1"
 			},
 			"engines": {
@@ -147,7 +147,6 @@
 				}
 			],
 			"license": "MIT",
-			"peer": true,
 			"dependencies": {
 				"baseline-browser-mapping": "^2.9.0",
 				"caniuse-lite": "^1.0.30001759",
@@ -496,9 +495,9 @@
 			}
 		},
 		"node_modules/postcss": {
-			"version": "8.5.6",
-			"resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
-			"integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+			"version": "8.5.8",
+			"resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.8.tgz",
+			"integrity": "sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==",
 			"funding": [
 				{
 					"type": "opencollective",
@@ -514,7 +513,6 @@
 				}
 			],
 			"license": "MIT",
-			"peer": true,
 			"dependencies": {
 				"nanoid": "^3.3.11",
 				"picocolors": "^1.1.1",
@@ -753,7 +751,6 @@
 			"resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
 			"integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
 			"license": "MIT",
-			"peer": true,
 			"engines": {
 				"node": ">=12"
 			},