Bump tokio from 1.39.3 to 1.40.0 in /myceliumd-private

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.39.3 to 1.40.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.39.3...tokio-1.40.0)

---
updated-dependencies:
- dependency-name: tokio
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

myceliumd-private/Cargo.lock

@@ -2679,9 +2679,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.39.3"
+version = "1.40.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9babc99b9923bfa4804bd74722ff02c0381021eafa4db9949217e3be8e84fff5"
+checksum = "e2b070231665d27ad9ec9b8df639893f46727666c6767db40317fbe920a5d998"
 dependencies = [
  "backtrace",
  "bytes",

myceliumd-private/Cargo.toml

@@ -27,7 +27,7 @@ mycelium-api = { path = "../mycelium-api", features = ["message"] }
 mycelium-cli = { path = "../mycelium-cli/", features = ["message"] }
 serde = { version = "1.0.209", features = ["derive"] }
 serde_json = "1.0.127"
-tokio = { version = "1.39.3", features = [
+tokio = { version = "1.40.0", features = [
   "macros",
   "rt-multi-thread",
   "signal",