fix: upgrade @middy/http-cors from 5.1.0 to 5.2.0

Snyk has created this PR to upgrade @middy/http-cors from 5.1.0 to 5.2.0.

See this package in npm:
https://www.npmjs.com/package/@middy/http-cors

See this project in Snyk:
https://app.snyk.io/org/nft-772/project/4402cfba-bad6-45c6-8980-ba0130c2ba07?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -34,7 +34,7 @@
     "@govtechsg/open-attestation": "^6.9.0",
     "@govtechsg/opencerts-verify": "^3.1.3",
     "@middy/core": "^5.1.0",
-    "@middy/http-cors": "^5.1.0",
+    "@middy/http-cors": "^5.2.0",
     "aws-sdk": "^2.1523.0",
     "lodash": "^4.17.13",
     "node-fetch": "^2.6.1",