chore(package): update shell-quote to version 1.7.2

Closes #230

Author: greenkeeper[bot]

package.json

@@ -53,7 +53,7 @@
     "mocha-junit-reporter": "1.18.0",
     "mocha-stress": "1.0.0",
     "prebuild": "8.2.1",
-    "shell-quote": "1.6.1",
+    "shell-quote": "1.7.2",
     "standard": "12.0.1",
     "temp": "0.9.0",
     "test-until": "1.1.1"