chore(package): update sinon to version 7.2.3

Author: greenkeeper[bot]

package.json

@@ -48,7 +48,7 @@
     "publish-please": "5.4.3",
     "reflect-metadata": "0.1.12",
     "run-sequence": "2.2.1",
-    "sinon": "6.0.1",
+    "sinon": "7.2.3",
     "tslint": "5.9.1",
     "typescript": "2.9.1"
   }