Update Bitcoin Node to v27.0

[nmfretz]

Bitcoin Core: Upgrades Bitcoin Core to version 27.0. Full release notes for Bitcoin Core 27.0 can be found at https://github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-27.0.md.

New Advanced Settings Options: Adds 3 new options to the Advanced Settings menu:

• datacarrier: Choose whether or not to relay transactions with OP_RETURN outputs.
• datacarriersize: Set the maximum size of the data in OP_RETURN outputs (in bytes) that your node will relay.
• permitbaremultisig: Choose wether or not to relay non-P2SH multisig transactions.

JoinMarket Compatibility: The deprecated RPC 'deprecatedrpc=create_bdb' is enabled to allow integration with JoinMarket and the Jam app by default. This fixes an issue where Jam app users who upgraded to Bitcoin Core v26.0 would have to manually add 'deprecatedrpc=create_bdb' to their bitcoin.conf file in order for the app to work.

Relevant JoinMarket issue: https://github.com/getumbrel/umbrel-bitcoin/issues/19

[nmfretz]

@theborakompanioni this update includes deprecratedrpc=create_bdb for Jam users.

Can you please take a look at this comment here before I send this live to the app store 🙏: https://github.com/getumbrel/umbrel-bitcoin/issues/19#issuecomment-2087942041

[nmfretz]

Thanks @smolgrrr, going live.

[theborakompanioni]

Nice! Thanks @nmfretz and @smolgrrr :pray:

[DireMunchkin]

@nmfretz There's an incompatibility with LND and Bitcoin Core v27, see here: https://github.com/getumbrel/umbrel/issues/1814