chore(health): Update generated code (#1951)

Author: tottoto

tonic-health/src/generated/grpc_health_v1.rs

@@ -37,10 +37,10 @@ pub mod health_check_response {
         /// (if the ProtoBuf definition does not change) and safe for programmatic use.
         pub fn as_str_name(&self) -> &'static str {
             match self {
-                ServingStatus::Unknown => "UNKNOWN",
-                ServingStatus::Serving => "SERVING",
-                ServingStatus::NotServing => "NOT_SERVING",
-                ServingStatus::ServiceUnknown => "SERVICE_UNKNOWN",
+                Self::Unknown => "UNKNOWN",
+                Self::Serving => "SERVING",
+                Self::NotServing => "NOT_SERVING",
+                Self::ServiceUnknown => "SERVICE_UNKNOWN",
             }
         }
         /// Creates an enum from field names used in the ProtoBuf definition.