Fix deprecation

Author: VincentLanglet

src/Fixable/Patcher.php

@@ -62,7 +62,9 @@ public function applyDiffs(string $fileName, array $diffs): string
 
 		$refMerge = new ReflectionClass(PhpMerge::class);
 		$refMergeMethod = $refMerge->getMethod('mergeHunks');
-		$refMergeMethod->setAccessible(true);
+		if (PHP_VERSION_ID < 80100) {
+			$refMergeMethod->setAccessible(true);
+		}
 
 		$result = Line::createArray(array_map(
 			static fn ($l) => [$l, Differ::OLD],

src/Testing/TestCaseSourceLocatorFactory.php

@@ -68,7 +68,9 @@ public function create(): SourceLocator
 				),
 			];
 			$vendorDirProperty = $classLoaderReflection->getProperty('vendorDir');
-			$vendorDirProperty->setAccessible(true);
+			if (PHP_VERSION_ID < 80100) {
+				$vendorDirProperty->setAccessible(true);
+			}
 			foreach ($classLoaders as $classLoader) {
 				$composerProjectPath = dirname($vendorDirProperty->getValue($classLoader));
 				if (!is_file($composerProjectPath . '/composer.json')) {