fix php 8.x build

Author: staabm

tests/PHPStan/Rules/Comparison/ImpossibleCheckTypeFunctionCallRuleTest.php

@@ -1045,7 +1045,7 @@ public function testBug13268(): void
 		$this->analyse([__DIR__ . '/data/bug-13268.php'], []);
 	}
 
-	#[RequiresPhp('>= 8.0')]
+	#[RequiresPhp('>= 8.1')]
 	public function testBug12087(): void
 	{
 		$tipText = 'Because the type is coming from a PHPDoc, you can turn off this check by setting <fg=cyan>treatPhpDocTypesAsCertain: false</> in your <fg=cyan>%configurationFile%</>.';

tests/PHPStan/Rules/Comparison/data/bug-12087.php

@@ -1,4 +1,4 @@
-<?php declare(strict_types=1);
+<?php // lint >= 8.1
 
 namespace Bug12087;