Skip PHP version 5.6 or earlier

resolves rectorphp/rector#9691

Author: ghostwriter

rules/TypeDeclaration/Rector/ClassMethod/StrictStringParamConcatRector.php

@@ -24,13 +24,14 @@
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
 use Rector\Rector\AbstractRector;
 use Rector\VendorLocker\ParentClassMethodTypeOverrideGuard;
+use Rector\VersionBonding\Contract\MinPhpVersionInterface;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
 /**
  * @see \Rector\Tests\TypeDeclaration\Rector\ClassMethod\StrictStringParamConcatRector\StrictStringParamConcatRectorTest
  */
-final class StrictStringParamConcatRector extends AbstractRector
+final class StrictStringParamConcatRector extends AbstractRector implements MinPhpVersionInterface
 {
     public function __construct(
         private readonly ParentClassMethodTypeOverrideGuard $parentClassMethodTypeOverrideGuard,
@@ -73,6 +74,11 @@ public function getNodeTypes(): array
         return [ClassMethod::class, Function_::class, Closure::class];
     }
 
+    public function provideMinPhpVersion(): int
+    {
+        return PhpVersionFeature::SCALAR_TYPES;
+    }
+
     /**
      * @param ClassMethod|Function_|Closure $node
      */