Fix: Pin firebase to a specific version to avoid deploy typing error

described here (pending fix): firebase/firebase-js-sdk#7174 (comment)

Author: andyhmltn

ks-frontend-services/package.json

@@ -26,7 +26,7 @@
     "@openapi-io-ts/runtime": "^0.3.1",
     "@stripe/stripe-js": "^1.35.0",
     "append-query": "^2.1.1",
-    "firebase": "^9.9.3",
+    "firebase": "9.18.0",
     "fp-ts": "^2.13.1",
     "io-ts": "^2.2.16",
     "io-ts-types": "^0.5.19",