build(deps): bump @google-cloud/storage from 5.19.4 to 6.1.0

Bumps [@google-cloud/storage](https://github.com/googleapis/nodejs-storage) from 5.19.4 to 6.1.0.
- [Release notes](https://github.com/googleapis/nodejs-storage/releases)
- [Changelog](https://github.com/googleapis/nodejs-storage/blob/main/CHANGELOG.md)
- [Commits](googleapis/nodejs-storage@v5.19.4...v6.1.0)

---
updated-dependencies:
- dependency-name: "@google-cloud/storage"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -199,7 +199,7 @@
   },
   "optionalDependencies": {
     "@google-cloud/firestore": "^4.15.1",
-    "@google-cloud/storage": "^5.18.3"
+    "@google-cloud/storage": "^6.1.0"
   },
   "devDependencies": {
     "@firebase/api-documenter": "^0.1.2",