chore(deps-dev): bump webpack from 4.30.0 to 4.31.0 (#261)

Bumps [webpack](https://github.com/webpack/webpack) from 4.30.0 to 4.31.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.30.0...v4.31.0)

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

package.json

@@ -193,7 +193,7 @@
 		"ts-loader": "^6.0.0",
 		"typescript": "^3.4.5",
 		"vscode": "^1.1.34",
-		"webpack": "^4.30.0",
+		"webpack": "^4.31.0",
 		"webpack-cli": "^3.3.2"
 	},
 	"engines": {

yarn.lock

@@ -3874,10 +3874,10 @@ webpack-sources@^1.1.0, webpack-sources@^1.3.0:
     source-list-map "^2.0.0"
     source-map "~0.6.1"
 
-webpack@^4.30.0:
-  version "4.30.0"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.30.0.tgz#aca76ef75630a22c49fcc235b39b4c57591d33a9"
-  integrity sha512-4hgvO2YbAFUhyTdlR4FNyt2+YaYBYHavyzjCMbZzgglo02rlKi/pcsEzwCuCpsn1ryzIl1cq/u8ArIKu8JBYMg==
+webpack@^4.31.0:
+  version "4.31.0"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.31.0.tgz#ae201d45f0571336e42d1c2b5c8ab56c4d3b0c63"
+  integrity sha512-n6RVO3X0LbbipoE62akME9K/JI7qYrwwufs20VvgNNpqUoH4860KkaxJTbGq5bgkVZF9FqyyTG/0WPLH3PVNJA==
   dependencies:
     "@webassemblyjs/ast" "1.8.5"
     "@webassemblyjs/helper-module-context" "1.8.5"