Merge bitcoindevkit#377: Bump Rust compiler version to stable (1.93.0)

b22ff58 build: bump rust compiler version to stable (1.93.0) (thunderbiscuit)

Pull request description:

  This PR bumps the Rust compiler to the lastest [stable release](https://releases.rs/).

ACKs for top commit:
  luisschwab:
    ACK b22ff58
  ValuedMammal:
    ACK b22ff58

Tree-SHA512: f20458c408cdee58caca29335450cf929e407d129851780a7d77c768e9cc0c75c9d98ea75ae9e93686bf649b8a689b54c3192e5541e1bc25a0f7e3761ca46844

Author: ValuedMammal

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.92.0"
+channel = "1.93.0"
 components = ["clippy", "rustfmt"]