Release 12.0.0

[chakra-guy]

Core [0.3.1]

Fixed

• Fixed rapid reconnect issue for shared clients (#55)

---

Note

Bumps root to 12.0.0 and core to 0.3.1, updating the core changelog with a fix for rapid reconnects in shared clients.

• Release:
  • Bump root package.json version to 12.0.0.
• Core (packages/core):
  • Bump @metamask/mobile-wallet-protocol-core to 0.3.1.
  • Update CHANGELOG.md with a Fixed entry for rapid reconnects in shared clients and adjust compare links.

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