Sort extensions' metadata by key

Author: Wirone

src/Analyser/ResultCache/ResultCacheManager.php

@@ -1059,6 +1059,8 @@ private function getMetaFromPhpStanExtensions(): array
 			$meta[$extension->getKey()] = $extension->getHash();
 		}
 
+		ksort($meta);
+
 		return $meta;
 	}