chore(package): update tmp to version 0.2.1

Closes #146

Author: greenkeeper[bot]

package.json

@@ -22,7 +22,7 @@
     "steal-qunit": "^1.0.1",
     "steal-tools": "^2.0.0",
     "testee": "^0.9.0",
-    "tmp": "^0.0.31"
+    "tmp": "^0.2.1"
   },
   "steal": {
     "directories": {