Merge bitcoindevkit/bdk#754: Fix the release process

e1fa0b66954cc56dae055464ab5bb40b7a5043be Fix the new release process (Alekos Filini)

Pull request description:

  ### Description

  A few things I noticed while doing the 0.22 release.

  Follow-up of #544

  ### 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)

ACKs for top commit:
  notmandatory:
    ACK e1fa0b66954cc56dae055464ab5bb40b7a5043be

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