Update the async-lock dependency

Cargo.lock

@@ -28,7 +28,7 @@ name = "acmed"
 version = "0.21.0"
 dependencies = [
  "acme_common",
- "async-lock 2.8.0",
+ "async-lock 3.0.0",
  "async-process",
  "bincode",
  "clap",

acmed/Cargo.toml

@@ -22,7 +22,7 @@ openssl_vendored = ["crypto_openssl", "acme_common/openssl_vendored"]
 
 [dependencies]
 acme_common = { path = "../acme_common" }
-async-lock = "2.6"
+async-lock = "3.0"
 async-process = "1.6"
 bincode = "1.3"
 clap = { version = "4.0", features = ["string"] }