Updated pipeline-contracts to 0.3 in the Service class attribute

Author: sebprt

src/Service.php

@@ -15,7 +15,7 @@
 #[Configurator\Pipeline(
     name: "fastmap",
     dependencies: [
-        'php-etl/pipeline-contracts:~0.2.0@dev',
+        'php-etl/pipeline-contracts:~0.3.0@dev',
         'php-etl/bucket-contracts:~0.1.0@dev',
         'php-etl/bucket:~0.2.0@dev',
     ],