fix(package): update term-size to version 2.1.1

Closes #329

Author: greenkeeper[bot]

package.json

@@ -24,7 +24,7 @@
     "os-locale": "^3.0.1",
     "plugin-error": "^1.0.1",
     "string-width": "^3.0.0",
-    "term-size": "^1.2.0",
+    "term-size": "^2.1.1",
     "through2": "^3.0.0",
     "to-time": "^1.0.2"
   },