Merge bitcoindevkit/bdk#1365: Bump bdk version to 1.0.0-alpha.7

fef70d5e8fe1903aa532897e1093b1b972e08055 Bump version to 1.0.0-alpha.7 (Steve Myers)

Pull request description:

  Bump bdk version to 1.0.0-alpha.7

  bdk_chain to 0.11.0
  bdk_bitcoind_rpc to 0.6.0
  bdk_electrum to 0.9.0
  bdk_esplora to 0.9.0
  bdk_file_store to 0.7.0

  fixes #1364

ACKs for top commit:
  danielabrozzoni:
    ACK fef70d5e8fe1903aa532897e1093b1b972e08055

Tree-SHA512: 94ba5cad102d89122897436390d4ababf49a19cf97f4118c0804b3288955dd591b543d4605268dcc1967f34e523a0c4058b06f9cd74c7e8c4394e902abc17022