message: subscriber: update to latest parking_lot
diff: @@ -50,7 +50,7 @@ serde = { version = "1.0", optional = true }
  tracing-serde = { path = "../tracing-serde", version = "0.1.1", optional = true }
  # opt-in deps
  -parking_lot = { version = ">= 0.7, < 0.10", optional = true }
  +parking_lot = { version = ">= 0.7, <= 0.11", optional = true }
  # registry
  sharded-slab = { version = "^0.0.9", optional = true }
  