codecov: ignore cashu/nostr #131

Job	Run time
checks / mypy	32s
checks / formatting	24s
checks / ruff	6s
tests (ubuntu-latest, 3.10, 1.5.1, false, FakeWallet) / poetry	1m 26s
tests (ubuntu-latest, 3.10, 1.5.1, true, FakeWallet) / poetry	1m 24s
regtest (3.10, 1.5.1, LNbitsWallet) / regtest	2m 24s
regtest (3.10, 1.5.1, CoreLightningRestWallet) / regtest	2m 48s
regtest (3.10, 1.5.1, LndRestWallet) / regtest	2m 34s
	11m 38s

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