Merge bitcoindevkit/bdk#606: Upgrade to rust-bitcoin 0.28

00164588f2ddab91bb4468ec010dc1bbca277eb5 Stop using deprecated structs (Alekos Filini)
a16c18255ceb3e13ff92ee41b2b6f6510491eeb8 Upgrade to rust-bitcoin 0.28 and miniscript 7.0 (Alekos Filini)

Pull request description:

  ### Description

  Upgrade all our dependencies to work with the new release of rust-bitcoin

  ### Notes to the reviewers

  The commits in this pr were originally part of #593

  ### 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

  #### New Features:

  * [x] I've updated `CHANGELOG.md`

ACKs for top commit:
  rajarshimaitra:
    ACK 00164588f2ddab91bb4468ec010dc1bbca277eb5

Tree-SHA512: eef7e94246e619686b4dfffd6e4cb685630fe2eaf9447f2f0b49ed2643d67f81c50e0d89b66267db4552a05e58f638d885eb7056270648403f716803fce9e275