[ISSUE-196] Fix JSON schema inconsistency

[jameskim0987]

Fixes #196

Changes made in this PR:
1. fix type array to object since Data is of type pointer to ComponentData

[nscuro]

Thanks for the PR @jameskim0987! Unfortunately it's the opposite of what needs to be done.

The schema is defined by the CycloneDX specification: https://github.com/CycloneDX/specification/tree/master/schema

But our Go code is not adhering to it correctly, as detailed in #196. So the solution would be to modify the Go code, not the schema.

[jameskim0987]

@nscuro Thanks for the clarification. I made the small change to the field type.
I have some questions:

1. In the code base, I see if conditions for checking spec version. For examplebom-1.6.schema.json, does it belong to if specVersion < SpecVersion1_6 blocks or if specVersion < SpecVersion1_7 blocks (which doesn't seem to exist yet).
2. How should I go about patching/adding tests for this specific field?
3. I see a recursive func for Component

   cyclonedx-go/convert.go

   Line 554 in 0a811bd

   func recurseComponent(component *Component, f func(c *Component)) {

   . From top level overview how does it work and would we have to do something similar for Data *[]ComponentData?

[jameskim0987]

@nscuro Hi, would you be able to address the comment above when you get a chance? Thank you!