Bump monaco-editor-webpack-plugin to latest

package.json

@@ -70,7 +70,7 @@
     "katex": "^0.9.0",
     "marked": "^0.3.12",
     "monaco-editor": "^0.14.3",
-    "monaco-editor-webpack-plugin": "^1.5.2",
+    "monaco-editor-webpack-plugin": "^1.5.4",
     "mousetrap": "^1.4.6",
     "pikaday": "^1.6.1",
     "popper.js": "^1.14.3",

yarn.lock

@@ -5004,9 +5004,9 @@ moment@2.x, moment@^2.18.1:
   version "2.19.2"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.19.2.tgz#8a7f774c95a64550b4c7ebd496683908f9419dbe"
 
-monaco-editor-webpack-plugin@^1.5.2:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/monaco-editor-webpack-plugin/-/monaco-editor-webpack-plugin-1.5.2.tgz#e113fa1d5759ede6fd776eb620cdd5930203b55a"
+monaco-editor-webpack-plugin@^1.5.4:
+  version "1.5.4"
+  resolved "https://registry.yarnpkg.com/monaco-editor-webpack-plugin/-/monaco-editor-webpack-plugin-1.5.4.tgz#6781a130e3e1379bb8f4cd190132f4af6dcd2c16"
 
 monaco-editor@^0.14.3:
   version "0.14.3"