Follow-up from "test(bbm): add integration tests for bbm"

The following discussion from !1692 (merged) should be addressed:

• @jdrpereira started a discussion: (+1 comment)

  Idea(non blocking): We're starting to accumulate more types of errors that essentially lead to the same end result (migration failure), and these if's keep getting longer. We may want to create a parent error type and then wrap in the underlying concrete type. In this if and other places we could simply check if the error is of the parent type and leave the child type assertion to the switch.