composer: update guzzlehttp/guzzle requirement from ^7.9 || ^7.10 to ^7.12.3

Updates the requirements on [guzzlehttp/guzzle](https://github.com/guzzle/guzzle) to permit the latest version.
- [Release notes](https://github.com/guzzle/guzzle/releases)
- [Changelog](https://github.com/guzzle/guzzle/blob/7.12/CHANGELOG.md)
- [Commits](guzzle/guzzle@7.10.0...7.12.3)

---
updated-dependencies:
- dependency-name: guzzlehttp/guzzle
  dependency-version: 7.12.3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -24,7 +24,7 @@
         "ext-curl": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
-        "guzzlehttp/guzzle": "^7.9 || ^7.10",
+        "guzzlehttp/guzzle": "^7.12.3",
         "guzzlehttp/psr7": "^1.8 || ^2.4",
         "vitexsoftware/ease-core": "^1.49"
     },