Merge bitcoindevkit/bdk#1924: chore: bump `miniscript` to `12.3.1`

f01de699785257ce5dd1c1ea53211ca947b66953 chore: bump `miniscript` to 12.3.1 (Wei Chen)

Pull request description:

  ### Description

  Bump `miniscript` dependency to `12.3.1`.

  ### Changelog notice

  * Updated `miniscript` dependency to `12.3.1`.

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  oleonardolima:
    ACK f01de699785257ce5dd1c1ea53211ca947b66953
  ValuedMammal:
    ACK f01de699785257ce5dd1c1ea53211ca947b66953

Tree-SHA512: 654f0c12d2626934572ea17c8f0b2042e75c7c7b6980d1628792f96830bbafefa05ec8b01e88941b5ce28c63a2a0c946225885253410fa26b1afecedd5a9fb87