Release libraries with Tag Commander version 5 support

[defagos]

As a developer integrating Letterbox I need to update my application so that analytics are sent to the updated Tag Commander service.

Acceptance criteria

• New version of the SDKs have been delivered, using Tag Commander SDK version 5.

Tasks

• [x] Rebase existing migration branch.
• [x] Deliver libraries.

[defagos]

Version 9.2.0 of Letterbox delivered, with SRG Analytics 9.0.0.