feat: upgrade express-validator from 6.15.0 to 7.0.1

Snyk has created this PR to upgrade express-validator from 6.15.0 to 7.0.1.

See this package in npm:
https://www.npmjs.com/package/express-validator

See this project in Snyk:
https://app.snyk.io/org/platform-PdyoyHbTw9cST38KuLAtvg/project/c47dea13-f7a6-4a2a-8f7d-9a6bff4c902a?utm_source=github-enterprise&utm_medium=referral&page=upgrade-pr

packages/events-service/package.json

@@ -29,7 +29,7 @@
     "body-parser": "^1.19.1",
     "cors": "^2.8.5",
     "express": "^4.17.1",
-    "express-validator": "^6.14.0",
+    "express-validator": "^7.0.1",
     "jwt-decode": "^3.1.2",
     "morgan": "^1.10.0",
     "serialize-error": "^11.0.3",