Update phpunit/phpunit requirement in /src/lib/composer-7.3

Updates the requirements on [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) to permit the latest version.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/master/ChangeLog-9.5.md)
- [Commits](sebastianbergmann/phpunit@1.0.0RC1...9.5.8)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-type: direct:development
...

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

Author: dependabot[bot]

src/lib/composer-7.3/composer.json

@@ -69,7 +69,7 @@
     "goaop/parser-reflection": "^3.0",
     "graze/guzzle-jsonrpc": "^3.0",
     "insolita/yii2-migration-generator": "^3.2",
-    "phpunit/phpunit": "<7",
+    "phpunit/phpunit": "<10",
     "yiisoft/yii2-faker": "^2.0.0",
     "yiisoft/yii2-gii": "^2.0.0",
     "odannyc/yii2-sse": "^0.1.0",