composer(deps-dev): update phpunit/phpunit requirement

Updates the requirements on [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) to permit the latest version.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/10.5.10/ChangeLog-10.5.md)
- [Commits](sebastianbergmann/phpunit@9.5.26...10.5.10)

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

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

Author: dependabot[bot]

composer.json

@@ -39,7 +39,7 @@
         "mikey179/vfsstream": "^1.6",
         "mockery/mockery": "^1.5",
         "orchestra/testbench": "^8.1",
-        "phpunit/phpunit": "^9.5.26"
+        "phpunit/phpunit": "^10.5.10"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,