fix(build): pin @types/lodash

`@types/[email protected]` was causing errors.

Author: filipesilva

package.json

@@ -80,7 +80,7 @@
     "leek": "0.0.21",
     "less": "^2.7.1",
     "less-loader": "^2.2.3",
-    "lodash": "^4.11.1",
+    "lodash": "4.14.42",
     "magic-string": "^0.16.0",
     "markdown-it": "4.3.0",
     "markdown-it-terminal": "0.0.3",