Ensure new permissions are not added to release APKs

[mcomella]

Vision statement / What / Requirements

A suspected cause of users stuck on v3.4-B is that one of our dependencies added a new permission: we should ensure our dependencies are not adding new permissions

Impact

Without this, our dependencies may add permissions without us knowing and fork our Fire TV user base.

Acceptance criteria

• Release builds cannot be released if permissions change unexpectedly

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We could do this manually or write a tool (e.g. that would fail release builds on CI & locally if the permissions change).

[athomasmoz]

Can we add it to our release management checklist to save time?