chore: increase grpc message size to allow for BIG BLONKS (#1694)

## Description

This will need to be released and added into v3 as part of the v4
upgrade. It will not effect running nodes today

#### PR checklist

- [ ] Tests written/updated
- [ ] Changelog entry added in `.changelog` (we use
[unclog](https://github.com/informalsystems/unclog) to manage our
changelog)
- [ ] Updated relevant documentation (`docs/` or `spec/`) and code
comments

Author: tac0turtle

abci/server/grpc_server.go

@@ -10,6 +10,8 @@ import (
 	"github.com/tendermint/tendermint/libs/service"
 )
 
+const mebibyte = 1024 * 1024
+
 type GRPCServer struct {
 	service.BaseService
 
@@ -43,7 +45,9 @@ func (s *GRPCServer) OnStart() error {
 	}
 
 	s.listener = ln
-	s.server = grpc.NewServer()
+	s.server = grpc.NewServer(
+		grpc.MaxRecvMsgSize(mebibyte * 75),
+	)
 	types.RegisterABCIApplicationServer(s.server, s.app)
 
 	s.Logger.Info("Listening", "proto", s.proto, "addr", s.addr)