chore(deps): update dependency sinon to v9.2.3

Author: renovate-bot

package.json

@@ -52,7 +52,7 @@
     "keycloak-request-token": "0.1.0",
     "keycloak-admin": "1.14.4",
     "nyc": "15.1.0",
-    "sinon": "9.2.2",
+    "sinon": "9.2.3",
     "subscriptions-transport-ws": "0.9.18",
     "ts-node": "9.1.1",
     "tslint": "5.20.1",