fix for 32 bit platforms

x/tx/signing/aminojson/time.go

@@ -46,7 +46,7 @@ func marshalTimestamp(message protoreflect.Message, writer io.Writer) error {
 
 // MaxDurationSeconds the maximum number of seconds (when expressed as nanoseconds) which can fit in an int64.
 // gogoproto encodes google.protobuf.Duration as a time.Duration, which is 64-bit signed integer.
-const MaxDurationSeconds = int64(math.MaxInt64/int(1e9)) - 1
+const MaxDurationSeconds = int64(math.MaxInt64)/1e9 - 1
 
 func marshalDuration(message protoreflect.Message, writer io.Writer) error {
 	fields := message.Descriptor().Fields()