Bump guzzlehttp/guzzle from 7.9.1 to 7.9.2

Bumps guzzlehttp/guzzle from 7.9.1 to 7.9.2.

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updated-dependencies:

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

Fixes 0033421, PR https://github.com/mantisbt/mantisbt/pull/2018

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