Support: fix build by adding @cosmjs/amino dependency

[ghost]

Context (issues, jira)

Live Common doesn't build.

src/families/cosmos/js-synchronisation.ts:11:53 - error TS2307: Cannot find module '@cosmjs/amino' or its corresponding type declarations.

11 import { pubkeyToAddress, decodeBech32Pubkey } from "@cosmjs/amino";

Description / Usage

Issue happens since #1913 where dependency to @cosmjs/ledger-amino was removed.
Unclear why CI was green on that PR 😕

The fix consists is adding only the @cosmjs/amino dependency.

Expectations

• Test coverage: The changes of this PR are covered by test. Unit test were added with mocks when depending on a backend/device.
• No impact: The changes of this PR have ZERO impact on the userland. Meaning, we can use these changes without modifying LLD/LLM at all. It will be a "noop" and the maintainers will be able to bump it without changing anything.

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Name	Status	Preview	Updated
ledger-live-common	❌ Failed (Inspect)		May 2, 2022 at 9:00AM (UTC)