Bump the all-dependencies group across 2 directories with 2 updates

Updates the requirements on [postcss](https://github.com/postcss/postcss) and [webpack](https://github.com/webpack/webpack) to permit the latest version.

Updates `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](postcss/postcss@8.5.6...8.5.8)

Updates `webpack` from 5.105.3 to 5.105.4
- [Release notes](https://github.com/webpack/webpack/releases)
- [Changelog](https://github.com/webpack/webpack/blob/main/CHANGELOG.md)
- [Commits](webpack/webpack@v5.105.3...v5.105.4)

Updates `postcss` to 8.5.8
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@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
  dependency-group: all-dependencies
- dependency-name: webpack
  dependency-version: 5.105.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: postcss
  dependency-version: 8.5.8
  dependency-type: direct:development
  dependency-group: all-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

e2e-package-managers/yarn/package.json

@@ -4,7 +4,7 @@
 	"private": true,
 	"description": "Can you use yarn with our plugins?",
 	"devDependencies": {
-		"postcss": "^8.5.6",
+		"postcss": "^8.5.8",
 		"postcss-preset-env": "^11.2.0"
 	},
 	"volta": {

e2e/browserslist/package-json/package.json

@@ -7,7 +7,7 @@
 		"test": "BROWSERSLIST_ENV=development node ./index.mjs && BROWSERSLIST_ENV=production node ./index.mjs && BROWSERSLIST_ENV=legacy-edge node ./index.mjs && node ./use-plugin-option.mjs"
 	},
 	"devDependencies": {
-		"postcss": "^8.5.6",
+		"postcss": "^8.5.8",
 		"postcss-preset-env": "file:../../../plugin-packs/postcss-preset-env"
 	},
 	"browserslist": {

e2e/package-lock.json

@@ -9,8 +9,8 @@
 		"test": "node ./dist/bundle-from-mjs.cjs && node ./dist/bundle-from-cjs.cjs "
 	},
 	"dependencies": {
-		"postcss": "^8.5.6",
-		"webpack": "^5.105.2",
+		"postcss": "^8.5.8",
+		"webpack": "^5.105.4",
 		"webpack-cli": "^6.0.1",
 		"postcss-preset-env": "file:../../../plugin-packs/postcss-preset-env"
 	},

e2e/webpack/bundle-through/package.json

@@ -8,8 +8,8 @@
 		"build": "webpack --config webpack.config.js"
 	},
 	"dependencies": {
-		"postcss": "^8.5.6",
-		"webpack": "^5.105.2",
+		"postcss": "^8.5.8",
+		"webpack": "^5.105.4",
 		"webpack-cli": "^6.0.1",
 		"postcss-loader": "^8.2.1",
 		"style-loader": "^4.0.0",