Update monolog/monolog requirement from ^2.4 to ^2.5

Updates the requirements on [monolog/monolog](https://github.com/Seldaek/monolog) to permit the latest version.
- [Release notes](https://github.com/Seldaek/monolog/releases)
- [Changelog](https://github.com/Seldaek/monolog/blob/2.x/CHANGELOG.md)
- [Commits](Seldaek/monolog@2.4.0...2.5.0)

---
updated-dependencies:
- dependency-name: monolog/monolog
  dependency-type: direct:production
...

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

composer.json

@@ -24,7 +24,7 @@
     "require": {
         "php": "^7.4 || ^8.0",
         "ext-json": "*",
-        "monolog/monolog": "^2.4",
+        "monolog/monolog": "^2.5",
         "php-di/php-di": "^6.4",
         "slim/psr7": "^1.5",
         "slim/slim": "^4.10"