Bump serverless from 4.7.0 to 4.9.0 (#54)

Bumps [serverless](https://github.com/serverless/serverless) from 4.7.0 to 4.9.0.
- [Release notes](https://github.com/serverless/serverless/releases)
- [Changelog](https://github.com/serverless/serverless/blob/main/CHANGELOG.md)
- [Commits](https://github.com/serverless/serverless/commits)

---
updated-dependencies:
- dependency-name: serverless
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -7,7 +7,7 @@
     "package": "serverless package"
   },
   "devDependencies": {
-    "serverless": "^4.7.0",
+    "serverless": "^4.9.0",
     "serverless-python-requirements": "^6.1.2"
   }
 }