Merge pull request #2855 from thelounge/renovate/webpack-4.x

Update dependency webpack to v4.21.0

package.json

@@ -105,7 +105,7 @@
     "stylelint-config-standard": "18.2.0",
     "textcomplete": "0.17.1",
     "undate": "0.3.0",
-    "webpack": "4.20.2",
+    "webpack": "4.21.0",
     "webpack-cli": "3.1.2",
     "webpack-dev-server": "3.1.9"
   }

yarn.lock

@@ -7668,9 +7668,9 @@ webpack-sources@^1.1.0, webpack-sources@^1.3.0:
     source-list-map "^2.0.0"
     source-map "~0.6.1"
 
-webpack@4.20.2:
-  version "4.20.2"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.20.2.tgz#89f6486b6bb276a91b0823453d377501fc625b5a"
+webpack@4.21.0:
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.21.0.tgz#bd03605c0f48c0d4aaaef78ead2769485e5afd92"
   dependencies:
     "@webassemblyjs/ast" "1.7.8"
     "@webassemblyjs/helper-module-context" "1.7.8"