cached_traffic_control: use ShareableRateLimit trait object

pbs-client/Cargo.toml

@@ -30,7 +30,7 @@ xdg = "2.2"
 pathpatterns = "0.1.2"
 proxmox = "0.15.0"
 proxmox-fuse = "0.1.1"
-proxmox-http = { version = "0.5.2", features = [ "client", "http-helpers", "websocket" ] }
+proxmox-http = { version = "0.5.3", features = [ "client", "http-helpers", "websocket" ] }
 proxmox-io = { version = "1", features = [ "tokio" ] }
 proxmox-lang = "1"
 proxmox-router = { version = "1.1", features = [ "cli" ] }