Bump guzzlehttp/guzzle from 6.5.3 to 7.2.0

Bumps [guzzlehttp/guzzle](https://github.com/guzzle/guzzle) from 6.5.3 to 7.2.0.
- [Release notes](https://github.com/guzzle/guzzle/releases)
- [Changelog](https://github.com/guzzle/guzzle/blob/master/CHANGELOG.md)
- [Commits](guzzle/guzzle@6.5.3...7.2.0)

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

Author: dependabot[bot]

composer.json

@@ -8,7 +8,7 @@
         "ext-json": "*",
         "bref/bref": "^0.5.24",
         "bref/logger": "^1.0.0",
-        "guzzlehttp/guzzle": "^6.5.3"
+        "guzzlehttp/guzzle": "^7.2.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^2.16.3",