Merge bitcoindevkit/bdk#1135: ci: Pin time, cc in order to keep MSRV

Merge bitcoindevkit/bdk#1135: ci: Pin time, cc in order to keep MSRV

ea6411c6850eef4f6c171b3035b3d70a8b2a9dc5 ci: Pin time, cc in order to keep MSRV (Daniela Brozzoni)

Pull request description:

  ### 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:
  notmandatory:
    ACK ea6411c6850eef4f6c171b3035b3d70a8b2a9dc5

Tree-SHA512: e2400bd4a1583db8503efa05279f1d97b136dfbe63ae92bc33817fa6763f7f3b8789acf9aef0f36bb8a0486539637eaa101f638d223354d3c6193f2ab2ebdfdb