Update dependency tar to v6 [SECURITY]

Author: renovate[bot]

node-v0.8.15/deps/npm/package.json

@@ -44,7 +44,7 @@
     "rimraf": "2",
     "request": "~2.9",
     "which": "1",
-    "tar": "~0.1.12",
+    "tar": "~6.2.1",
     "fstream": "~0.1.17",
     "block-stream": "*",
     "inherits": "1",