[Deps] update object.assign

Author: ljharb

package.json

@@ -44,7 +44,7 @@
 		"object-inspect": "^1.13.1",
 		"object-is": "^1.1.5",
 		"object-keys": "^1.1.1",
-		"object.assign": "^4.1.4",
+		"object.assign": "^4.1.5",
 		"resolve": "^2.0.0-next.5",
 		"string.prototype.trim": "^1.2.8"
 	},