Now, a `dependency-submission` step will trigger a dependency-graph
generation, even if it follows a `setup-gradle` step in the workflow.
Similarly, a `setup-gradle` step with `dependency-graph` configured
will function as expected even if it follows a `setup-gradle` step.
Instead of being a thin wrapper over `setup-gradle`, the `dependency-submission`
action is now a fully-fledged action sharing implementation with `setup-gradle`.
