mint: fix postgres migrations (#375) #124

Job	Run time
checks / formatting	23s
checks / mypy	30s
checks / ruff	6s
regtest (3.10, 1.5.1, LNbitsWallet) / regtest	2m 35s
regtest (3.10, 1.5.1, CoreLightningRestWallet) / regtest	2m 43s
regtest (3.10, 1.5.1, LndRestWallet) / regtest	2m 23s
tests (ubuntu-latest, 3.10, 1.5.1, false, FakeWallet) / poetry	1m 20s
tests (ubuntu-latest, 3.10, 1.5.1, true, FakeWallet) / poetry	1m 22s
	11m 22s

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