Bump @google-cloud/storage from 7.14.0 to 7.18.0 in /src (#77)

Bumps [@google-cloud/storage](https://github.com/googleapis/nodejs-storage) from 7.14.0 to 7.18.0.
- [Release notes](https://github.com/googleapis/nodejs-storage/releases)
- [Changelog](https://github.com/googleapis/nodejs-storage/blob/main/CHANGELOG.md)
- [Commits](googleapis/nodejs-storage@v7.14.0...v7.18.0)

---
updated-dependencies:
- dependency-name: "@google-cloud/storage"
  dependency-version: 7.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/package-lock.json

@@ -15,7 +15,7 @@
   "dependencies": {
     "@google-cloud/firestore": "8.0.0",
     "@google-cloud/functions-framework": "^4.0.0",
-    "@google-cloud/storage": "7.14.0"
+    "@google-cloud/storage": "7.18.0"
   },
   "devDependencies": {
     "@jest/transform": "^30.2.0",