chore(deps): bump @google-cloud/functions-framework in /src (#80)

Bumps [@google-cloud/functions-framework](https://github.com/GoogleCloudPlatform/functions-framework-nodejs) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/GoogleCloudPlatform/functions-framework-nodejs/releases)
- [Changelog](https://github.com/GoogleCloudPlatform/functions-framework-nodejs/blob/main/CHANGELOG.md)
- [Commits](GoogleCloudPlatform/functions-framework-nodejs@v4.0.0...v5.0.0)

---
updated-dependencies:
- dependency-name: "@google-cloud/functions-framework"
  dependency-version: 5.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]