Update dependency iconv-lite to v0.6.3

Author: renovate[bot]

package-lock.json

@@ -30,7 +30,7 @@
     "charset"
   ],
   "dependencies": {
-    "iconv-lite": "0.5.1",
+    "iconv-lite": "0.6.3",
     "plugin-error": "1.0.1",
     "through2": "3.0.1"
   },