Update nepada/coding-standard requirement from 7.3.0 to 7.4.0

Updates the requirements on [nepada/coding-standard](https://github.com/nepada/coding-standard) to permit the latest version.
- [Release notes](https://github.com/nepada/coding-standard/releases)
- [Commits](nepada/coding-standard@v7.3.0...v7.4.0)

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

composer.json

@@ -29,7 +29,7 @@
         "nepada/phpstan-nette-tester": "0.3.1",
         "spaze/phpstan-disallowed-calls": "1.4.0",
         "php-parallel-lint/php-parallel-lint": "1.2.0",
-        "nepada/coding-standard": "7.3.0",
+        "nepada/coding-standard": "7.4.0",
         "nette/bootstrap": "^3.0@dev",
         "nette/di": "^3.0.5@dev",
         "nette/schema": "^1.0@dev",