Merge bitcoindevkit/bdk#1347: Bump bdk version to 1.0.0-alpha.6

Merge bitcoindevkit/bdk#1347: Bump bdk version to 1.0.0-alpha.6

83798390108ef37443dbe2d6ec0d35a346e69957 Bump version to 1.0.0-alpha.6 (Steve Myers)

Pull request description:

  ### Description

  Fixes #1343

  Bump bdk version to 1.0.0-alpha.6, also bump:

  bdk_chain to 0.10.0
  bdk_bitcoind_rpc to 0.5.0
  bdk_electrum to 0.8.0
  bdk_esplora to 0.8.0
  bdk_file_store to 0.6.0

  ### 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:
  danielabrozzoni:
    utACK 83798390108ef37443dbe2d6ec0d35a346e69957

Tree-SHA512: b16a8f88ab66ed78d6f6402d60acfa79b2371a12580a277f9bb3d3df212fb608a8305b6f5082bb280b9a18e209c70be0db38c893fff2f5c1f6085a99e3819479