Merge #1751: deps(electrum): bump electrum-client to 0.22.0

2be3b02 deps(electrum): bump `electrum-client` to 0.22.0 (Wei Chen)

Pull request description:

  Partially resolves #1742.

  ### Description

  Updates the `electrum-client` dependency to 0.22.0 for `bdk_electrum`.

  ### Notes to the reviewers

  ### Changelog notice

  * Updated `electrum-client` dependency to 0.22.0.

  ### 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:
  notmandatory:
    ACK 2be3b02

Tree-SHA512: 72a893b3939f217823382be815a38e13bef0201ac4b320a6de9c92ff36f2d013f95701e01afba95a5e4fcd874d8f3b0f2c432de608a6d41746b03dc4d03cb6e8

Author: notmandatory

crates/electrum/Cargo.toml

@@ -14,7 +14,7 @@ workspace = true
 
 [dependencies]
 bdk_core = { path = "../core", version = "0.3.0" }
-electrum-client = { version = "0.21", features = [ "proxy" ], default-features = false }
+electrum-client = { version = "0.22", features = [ "proxy" ], default-features = false }
 
 [dev-dependencies]
 bdk_testenv = { path = "../testenv" }