Bump @metamask/post-message-stream from 6.0.0 to 6.1.2#16

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dependabot/npm_and_yarn/main/metamask/post-message-stream-6.1.2kunxl-gg/Automating-Payments-Snap:dependabot/npm_and_yarn/main/metamask/post-message-stream-6.1.2Copy head branch name to clipboard