fix: remove trailing comma

Signed-off-by: Bart Jaskulski <bjaskulski@protonmail.com>

composer.json

@@ -8,7 +8,7 @@
 		"szepeviktor/phpstan-wordpress": "^1.3 || ^2",
 		"phpstan/phpstan-deprecation-rules": "^1.1 || ^2",
 		"php-stubs/woocommerce-stubs": "*",
-		"phpstan/phpstan-strict-rules": "^1.5 || ^2",
+		"phpstan/phpstan-strict-rules": "^1.5 || ^2"
 	},
 	"license": "MIT",
 	"authors": [