Add the deps_checker_label attribute

[jadenPete]

From the documentation on it:

The label to identify this target in the output of the dependency checker.

By default, this is just the label of the target. But sometimes—for
example, when overriding an artifact with rules_jvm_external to
point to your own, or defining an alias to target—you want the
dependency checker to suggest you add or remove a different label as a
dependency. In that case, you can set this attribute to that label.