Fix phpunit deprecations

tests/Monolog/Processor/ClosureContextProcessorTest.php

@@ -12,6 +12,7 @@
 namespace Monolog\Processor;
 
 use Monolog\Test\TestCase;
+use PHPUnit\Framework\Attributes\DataProvider;
 
 class ClosureContextProcessorTest extends TestCase
 {
@@ -24,9 +25,7 @@ class ClosureContextProcessorTest extends TestCase
         $this->assertSame($context, $record->context);
     }
 
-    /**
-     * @dataProvider getContexts
-     */
+    #[DataProvider('getContexts')]
     public function testSkip(array $context)
     {
         $processor = new ClosureContextProcessor();