Bump webpack-cli from 5.0.2 to 5.1.0 in /e2e (csstools#961)

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 5.0.2 to 5.1.0.
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/webpack-cli@5.0.2...webpack-cli@5.1.0)

---
updated-dependencies:
- dependency-name: webpack-cli
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

e2e/package-lock.json

@@ -11,7 +11,7 @@
 	"dependencies": {
 		"postcss": "^8.4.20",
 		"webpack": "^5.82.0",
-		"webpack-cli": "^5.0.1",
+		"webpack-cli": "^5.1.0",
 		"postcss-preset-env": "file:../../../plugin-packs/postcss-preset-env"
 	},
 	"volta": {

e2e/webpack/bundle-through/package.json

@@ -10,7 +10,7 @@
 	"dependencies": {
 		"postcss": "^8.4.20",
 		"webpack": "^5.82.0",
-		"webpack-cli": "^5.0.1",
+		"webpack-cli": "^5.1.0",
 		"postcss-loader": "^7.2.4",
 		"style-loader": "^3.3.1",
 		"css-loader": "^6.7.1",