Bump firebase-functions from 3.16.0 to 5.0.1 in /functions

Bumps [firebase-functions](https://github.com/firebase/firebase-functions) from 3.16.0 to 5.0.1.
- [Release notes](https://github.com/firebase/firebase-functions/releases)
- [Changelog](https://github.com/firebase/firebase-functions/blob/master/tsconfig.release.json)
- [Commits](firebase/firebase-functions@v3.16.0...v5.0.1)

---
updated-dependencies:
- dependency-name: firebase-functions
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

functions/package.json

@@ -40,7 +40,7 @@
 	"dependencies": {
 		"ejs": "^3.1.6",
 		"firebase-admin": "^10.0.2",
-		"firebase-functions": "^3.16.0"
+		"firebase-functions": "^5.0.1"
 	},
 	"devDependencies": {
 		"eslint": "^8.55.0",