Update phpstan/phpstan-strict-rules requirement from 1.3.0 to 1.4.2

Updates the requirements on [phpstan/phpstan-strict-rules](https://github.com/phpstan/phpstan-strict-rules) to permit the latest version.
- [Release notes](https://github.com/phpstan/phpstan-strict-rules/releases)
- [Commits](phpstan/phpstan-strict-rules@1.3.0...1.4.2)

---
updated-dependencies:
- dependency-name: phpstan/phpstan-strict-rules
  dependency-type: direct:development
...

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

composer.json

@@ -25,7 +25,7 @@
         "nette/tester": "2.4.2",
         "phpstan/phpstan": "1.8.2",
         "phpstan/phpstan-nette": "1.0.0",
-        "phpstan/phpstan-strict-rules": "1.3.0",
+        "phpstan/phpstan-strict-rules": "1.4.2",
         "spaze/phpstan-disallowed-calls": "2.5.0",
         "shipmonk/phpstan-rules": "1.0.1",
         "nette/di": "^3.0.6@dev",