Bump semver and @google-cloud/storage in /blueprints/gke/binauthz/image (#1469)

Removes [semver](https://github.com/npm/node-semver). It's no longer used after updating ancestor dependency [@google-cloud/storage](https://github.com/googleapis/nodejs-storage). These dependencies need to be updated together.


Removes `semver`

Updates `@google-cloud/storage` from 5.18.3 to 6.11.0
- [Release notes](https://github.com/googleapis/nodejs-storage/releases)
- [Changelog](https://github.com/googleapis/nodejs-storage/blob/main/CHANGELOG.md)
- [Commits](https://github.com/googleapis/nodejs-storage/compare/v5.18.3...v6.11.0)

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

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blueprints/gke/binauthz/image/package.json

@@ -9,7 +9,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@google-cloud/storage": "^5.18.3",
+    "@google-cloud/storage": "^6.11.0",
     "express": "^4.17.3"
   }
 }