chore: upgrade pmx dep

Author: Unitech

package.json

@@ -178,7 +178,7 @@
     "pm2-axon-rpc": "0.5.0",
     "pm2-deploy": "^0.3.9",
     "pm2-multimeter": "^0.1.2",
-    "pmx": "1.6.1-next",
+    "pmx": "1.6.2-next",
     "promptly": "2.2.0",
     "semver": "^5.3",
     "shelljs": "0.7.8",