Update nette/tester requirement from 2.4.1 to 2.4.2

Updates the requirements on nette/tester to permit the latest version.

---
updated-dependencies:
- dependency-name: nette/tester
  dependency-type: direct:development
...

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

composer.json

@@ -22,7 +22,7 @@
         "php-parallel-lint/php-parallel-lint": "1.3.2",
         "nepada/coding-standard": "7.4.2",
         "nepada/phpstan-nette-tester": "0.4.0",
-        "nette/tester": "2.4.1",
+        "nette/tester": "2.4.2",
         "phpstan/phpstan": "1.4.6",
         "phpstan/phpstan-nette": "1.0.0",
         "phpstan/phpstan-strict-rules": "1.1.0",