chore(functions): remove unused dep

Author: Dabolus

bun.lockb

@@ -20,7 +20,6 @@
   },
   "devDependencies": {
     "esbuild": "^0.24.0",
-    "firebase-functions-test": "^3.3.0",
     "npm-run-all": "^4.1.5",
     "undici": "^7.1.0",
     "wait-on": "^8.0.1"