fix: added sleep to ln test

[alexlwn123]

Fixes flakey tests by adding a timeout.

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Latest commit: 239ee2c1809b342990f6331900d8776ba88d21c3

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[github-actions[bot]]

Size Change: 0 B

Total Size: 7.23 MB

ℹ️ View Unchanged

| Filename | Size | | :--- | :---: | | `packages/core-web/dist/index.js` | 2.3 kB | | `packages/core-web/dist/worker.js` | 646 B | | `packages/wasm-bundler/fedimint_client_wasm_bg.wasm` | 3.61 MB | | `packages/wasm-web/fedimint_client_wasm_bg.wasm` | 3.61 MB |

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