feat: regtest is dead, long live signet #6286

Job	Run time
lint-commits	8s
generate-ffi	1m 40s
10101 node tests	4m 23s
formatting-dprint	18s
e2e_tests_prepare	9m 23s
clippy	53s
Format and lint Flutter code	47s
payout-curve	2m 36s
unit-tests	3m 57s
e2e-tests (./target/debug/deps/e2e_basic-0d62a77a1d830e44)	5m 2s
e2e-tests (./target/debug/deps/e2e_close_position-335ba79a7dfeef41)	6m 7s
e2e-tests (./target/debug/deps/e2e_collaborative_close_channel-79f9bcadde55acd5)	5m 44s
e2e-tests (./target/debug/deps/e2e_collaborative_revert-1c4b00c4e303e19f)	6m 3s
e2e-tests (./target/debug/deps/e2e_force_close_position-f1b15920067ccdfd)	5m 29s
e2e-tests (./target/debug/deps/e2e_force_close_settled_channel-e638315814eba5ba)	8m 8s
e2e-tests (./target/debug/deps/e2e_open_position-88e360e83ae12fb9)	4m 57s
e2e-tests (./target/debug/deps/e2e_open_position_small_utxos-5610c99aa846e78b)	5m 21s
e2e-tests (./target/debug/deps/e2e_open_position_with_external_funding-f233b90bec6a5472)	5m 19s
e2e-tests (./target/debug/deps/e2e_reject_offer-dd92252e4a09c718)	5m 19s
e2e-tests (./target/debug/deps/e2e_resize_position-e1ca7e8c7dde0625)	6m 25s
e2e-tests (./target/debug/deps/e2e_restore_from_backup-78aadfa5751d727f)	5m 44s
e2e-tests (./target/debug/deps/e2e_rollover_position-f2cb36437758d88f)	5m 55s
e2e_tests_check	1s
	1h 39m 39s

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