Bump guzzlehttp/guzzle from 7.9.2 to 7.9.3

Bumps guzzlehttp/guzzle from 7.9.2 to 7.9.3.

• Release notes
• Changelog
• Commits

updated-dependencies:

• dependency-name: guzzlehttp/guzzle
  dependency-type: direct:production
  update-type: version-update:semver-patch
  ...

Fixes 0035756, PR https://github.com/mantisbt/mantisbt/pull/2134

Signed-off-by: dependabot[bot] support@github.com
Co-authored-by: dependabot[bot] 49699333+dependabot[bot]@users.noreply.github.com