fix: packages/email-server/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-FASTIFY-15182642
- https://snyk.io/vuln/SNYK-JS-FASTIFY-15182641

Author: snyk-bot

packages/email-server/package.json

@@ -40,8 +40,8 @@
     "cron": "^2.1.0",
     "dotenv": "^16.0.3",
     "encoding": "^0.1.13",
-    "fastify": "^4.0.0",
-    "fastify-cli": "^5.5.1",
+    "fastify": "^5.7.3",
+    "fastify-cli": "^7.0.0",
     "fastify-cron": "^1.3.1",
     "fastify-plugin": "^4.3.0",
     "html-minifier": "^4.0.0",