Upgrade to `rust-bitcoin` 0.31.0

[tnull]

Describe the enhancement
rust-bitcoin 0.31.0 was recently released and includes changes that so far kept LDK from upgrading to 0.3X.Y (cf. lightningdevkit/rust-lightning#2124 (comment)).

Additional context
Probably currently blocked on rust-bitcoin/rust-miniscript#622

[tnull]

This now seems unblocked as rust-miniscript 11.0 was just released.

[tnull]

@notmandatory Is the current plan to do this as part of 1.0-alpha.3 or 1.0-alpha.4? Trying to wrap my head around when I need for LDK to upgrade to be able to use the latest bdk/rust-esplora-client/rust-electrum-client in LDK Node.

[notmandatory]

@tnull this PR is still scheduled for the bdk 1.0-alpha.X milestone release. But you are correct we also need to make sure the below PRs are released first:

1. Upgrade bitcoin to v0.31 rust-electrum-client#121 released in 0.19.0
2. Upgrade bitcoin RCasatta/electrsd#74 released in 0.27.0
3. Upgrade bitcoin to v0.31 rust-esplora-client#79 released in 0.7.0
4. Upgrade bitcoin rust-hwi#91 released in 0.8.0