Bump @azure/functions in /api-functions-v4-azure-resource-management

Bumps [@azure/functions](https://github.com/Azure/azure-functions-nodejs-library) from 4.0.0-alpha.9 to 4.8.0.
- [Release notes](https://github.com/Azure/azure-functions-nodejs-library/releases)
- [Commits](https://github.com/Azure/azure-functions-nodejs-library/commits)

---
updated-dependencies:
- dependency-name: "@azure/functions"
  dependency-version: 4.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]