Bump webpack from 5.21.2 to 5.27.2 (betagouv#976)

Bumps [webpack](https://github.com/webpack/webpack) from 5.21.2 to 5.27.2.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.21.2...v5.27.2)

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package.json

@@ -17,7 +17,7 @@
     "rimraf": "3.0.2",
     "ts-loader": "8.0.14",
     "typescript": "4.1.3",
-    "webpack": "5.21.2",
+    "webpack": "5.27.2",
     "webpack-cli": "4.5.0",
     "webpack-merge": "5.7.3"
   }