Nutshell cleanup wishlist #43

Job	Run time
checks / formatting	26s
checks / mypy	38s
checks / ruff	7s
regtest (3.10, 1.7.1, CoreLightningRestWallet) / regtest	2m 58s
regtest (3.10, 1.7.1, LNbitsWallet) / regtest	2m 42s
regtest (3.10, 1.7.1, LndRestWallet) / regtest	2m 39s
tests (ubuntu-latest, 3.10, 1.7.1, FakeWallet) / poetry	1m 37s
tests (ubuntu-latest, 3.9, 1.7.1, FakeWallet) / poetry	1m 33s
	12m 40s

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