rebase: bump github.com/aws/aws-sdk-go from 1.40.55 to 1.41.0

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.40.55 to 1.41.0.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Changelog](https://github.com/aws/aws-sdk-go/blob/main/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-go/compare/v1.40.55...v1.41.0)

---
updated-dependencies:
- dependency-name: github.com/aws/aws-sdk-go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/aws/aws-sdk-go/private/protocol/json/jsonutil/build.go

@@ -82,13 +82,17 @@ func buildStruct(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag)
 		field, _ := value.Type().FieldByName(payload)
 		tag = field.Tag
 		value = elemOf(value.FieldByName(payload))
-
-		if !value.IsValid() {
+		if !value.IsValid() && tag.Get("type") != "structure" {
 			return nil
 		}
 	}
 
 	buf.WriteByte('{')
+	defer buf.WriteString("}")
+
+	if !value.IsValid() {
+		return nil
+	}
 
 	t := value.Type()
 	first := true
@@ -144,8 +148,6 @@ func buildStruct(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag)
 
 	}
 
-	buf.WriteString("}")
-
 	return nil
 }
 

vendor/github.com/aws/aws-sdk-go/private/protocol/jsonrpc/jsonrpc.go

@@ -49,9 +49,8 @@ func Build(req *request.Request) {
 		buf = emptyJSON
 	}
 
-	if req.ClientInfo.TargetPrefix != "" || string(buf) != "{}" {
-		req.SetBufferBody(buf)
-	}
+	// Always serialize the body, don't suppress it.
+	req.SetBufferBody(buf)
 
 	if req.ClientInfo.TargetPrefix != "" {
 		target := req.ClientInfo.TargetPrefix + "." + req.Operation.Name

vendor/github.com/aws/aws-sdk-go/private/protocol/rest/payload.go

@@ -28,18 +28,27 @@ func PayloadMember(i interface{}) interface{} {
 	return nil
 }
 
-// PayloadType returns the type of a payload field member of i if there is one, or "".
+const nopayloadPayloadType = "nopayload"
+
+// PayloadType returns the type of a payload field member of i if there is one,
+// or "".
 func PayloadType(i interface{}) string {
 	v := reflect.Indirect(reflect.ValueOf(i))
 	if !v.IsValid() {
 		return ""
 	}
+
 	if field, ok := v.Type().FieldByName("_"); ok {
+		if noPayload := field.Tag.Get(nopayloadPayloadType); noPayload != "" {
+			return nopayloadPayloadType
+		}
+
 		if payloadName := field.Tag.Get("payload"); payloadName != "" {
 			if member, ok := v.Type().FieldByName(payloadName); ok {
 				return member.Tag.Get("type")
 			}
 		}
 	}
+
 	return ""
 }