fix: examples/email-queue/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-RAILROADDIAGRAMS-6282875

Author: snyk-bot

examples/email-queue/package.json

@@ -7,7 +7,7 @@
     "@ladjs/graceful": "^1.0.5",
     "bree": "^7.1.0",
     "cabin": "^9.0.4",
-    "email-templates": "^8.0.8",
+    "email-templates": "^11.1.1",
     "p-map": "4"
   }
 }