Ensure that encoding of pricing doesn't raise

dagger/bitswap/protobuf/payments.nim

@@ -1,6 +1,7 @@
 import pkg/protobuf_serialization
 import pkg/nitro
 import pkg/questionable
+import pkg/upraises
 
 import_proto3 "payments.proto"
 
@@ -8,6 +9,8 @@ export PricingMessage
 
 export nitro
 
+push: {.upraises: [].}
+
 type
   Pricing* = object
     address*: EthAddress