Bump guzzlehttp/guzzle (#784)

Bumps the devcenter-generator-dependencies group in /support/devcenter with 1 update: [guzzlehttp/guzzle](https://github.com/guzzle/guzzle).


Updates `guzzlehttp/guzzle` from 7.9.2 to 7.9.3
- [Release notes](https://github.com/guzzle/guzzle/releases)
- [Changelog](https://github.com/guzzle/guzzle/blob/7.9/CHANGELOG.md)
- [Commits](guzzle/guzzle@7.9.2...7.9.3)

---
updated-dependencies:
- dependency-name: guzzlehttp/guzzle
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: devcenter-generator-dependencies
...

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

Author: dependabot[bot]