[Deps] update pbkdf2

Author: ljharb

package.json

@@ -25,7 +25,7 @@
 		"asn1.js": "^4.10.1",
 		"browserify-aes": "^1.2.0",
 		"evp_bytestokey": "^1.0.3",
-		"pbkdf2": "^3.1.3",
+		"pbkdf2": "^3.1.5",
 		"safe-buffer": "^5.2.1"
 	},
 	"devDependencies": {