Bump `rust-bitcoin` to version 0.31

[tnull]

After we upgraded to rust-bitcoin 0.30 in #2740, we should look into upgrading to 0.31.0 soon to keep up with the most-recent version. However, this time we should try to coordinate the upgrade with the wider ecosystem, especially BDK (cc @notmandatory), which just recently was unblocked from upgrading as rust-miniscript released the upgraded version 11.0 (see bitcoindevkit/bdk#1196).

I think we should release 0.0.119 with rust-bitcoin 0.30 and then look to upgrade to 0.31 for the following release.

[notmandatory]

Related PR for BDK is bitcoindevkit/bdk#1177 since we also depend on rust-miniscript being updated I'm not 100% sure this will make it into our 1.0 release milestone.

[jirijakes]

Hi all!

It seems nobody is actively working on rust-bitcoin upgrade yet? If it's so, I would like to start working on upgrading to rust-bitcoin 0.32, with the goal of starting to open draft PRs within a few days.

I am aware of bitcoindevkit/bdk#1422 and the linked Discord discussion. I don't know whether there have been some other discussions on this topic.

[tnull]

Hi all!

It seems nobody is actively working on rust-bitcoin upgrade yet? If it's so, I would like to start working on upgrading to rust-bitcoin 0.32, with the goal of starting to open draft PRs within a few days.

I am aware of bitcoindevkit/bdk#1422 and the linked Discord discussion. I don't know whether there have been some other discussions on this topic.

Great to hear you'd be interested in working on it! It would be great if we could do the upgrades individually though, i.e., fist open a PR for 0.31 and then another one 0.32. Depending on the timeline we'll want to land both or only the first one for the next LDK release to ascertain compatibility with the rest of the ecosystem, in particular BDK.

[jirijakes]

It would be great if we could do the upgrades individually though, i.e., fist open a PR for 0.31 and then another one 0.32.

Alright, no problem with this.