Enable feature flag `ci_retry_on_exit_codes` (Introduced in GitLab 16.10)

Please enable the feature flag ci_retry_on_exit_codes. It is described here: https://docs.gitlab.com/ee/ci/yaml/#retryexit_codes and permits to retry a salsa-ci pipeline job if it fails with a specific exit code.

Introduced in GitLab 16.10 with a flag named ci_retry_on_exit_codes. Disabled by default.

On self-managed GitLab, by default this feature is not available. To make it available, an administrator can enable the feature flag named ci_retry_on_exit_codes.

Oh I see the gitlab instance on salsa is 16.8. So this would have to wait for an upgrade.