The job was canceled because "ubuntu-latest_8_1_10_25__" failed.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/var-exporter ^7.1 -> satisfiable by symfony/var-exporter[v7.1.0-BETA1, ..., 7.2.x-dev]. - symfony/var-exporter[v7.1.0-BETA1, ..., 7.2.x-dev] require php >=8.2 -> your php version (8.1.30) does not satisfy that requirement.