fixup! prefix PHP and PHPUnit version with >= in RequiresAnnotationWithValueToAttributeRector

Author: TomasVotruba

rules/AnnotationsToAttributes/NodeFactory/RequiresAttributeFactory.php

@@ -26,7 +26,7 @@ public function create(string $annotationValue): ?AttributeGroup
                 $attributeClass = 'PHPUnit\Framework\Attributes\RequiresPhp';
 
                 // only version is used, we need to prefix with >=
-                if (is_numeric($attributeValue[0])) {
+                if (is_string($attributeValue) && is_numeric($attributeValue[0])) {
                     $attributeValue = '>= ' . $attributeValue;
                 }
 
@@ -36,7 +36,7 @@ public function create(string $annotationValue): ?AttributeGroup
                 $attributeClass = 'PHPUnit\Framework\Attributes\RequiresPhpunit';
 
                 // only version is used, we need to prefix with >=
-                if (is_numeric($attributeValue[0])) {
+                if (is_string($attributeValue) && is_numeric($attributeValue[0])) {
                     $attributeValue = '>= ' . $attributeValue;
                 }