[router] Health check on worker before adding to the router (#2392)

rust/Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "actix-codec"
@@ -2219,6 +2219,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tokenizers",
+ "tokio",
 ]
 
 [[package]]
@@ -2475,9 +2476,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.41.0"
+version = "1.42.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "145f3413504347a2be84393cc8a7d2fb4d863b375909ea59f2158261aa258bbb"
+checksum = "5cec9b21b0450273377fc97bd4c33a8acffc8c996c987a7c5b319a0083707551"
 dependencies = [
  "backtrace",
  "bytes",