chore(deps): bump github.com/aws/aws-sdk-go-v2 from 1.20.3 to 1.21.0 (#2703)

Bumps [github.com/aws/aws-sdk-go-v2](https://github.com/aws/aws-sdk-go-v2) from 1.20.3 to 1.21.0.
- [Release notes](https://github.com/aws/aws-sdk-go-v2/releases)
- [Commits](https://github.com/aws/aws-sdk-go-v2/compare/v1.20.3...v1.21.0)

---
updated-dependencies:
- dependency-name: github.com/aws/aws-sdk-go-v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/github.com/aws/aws-sdk-go-v2/CHANGELOG.md

@@ -1,3 +1,24 @@
+# Release (2023-08-21)
+
+## General Highlights
+* **Dependency Update**: Updated to the latest SDK module versions
+
+## Module Highlights
+* `github.com/aws/aws-sdk-go-v2`: v1.21.0
+  * **Feature**: Add support for polly SynthesizeSpeech GET request presigner
+* `github.com/aws/aws-sdk-go-v2/service/cloud9`: [v1.18.6](service/cloud9/CHANGELOG.md#v1186-2023-08-21)
+  * **Documentation**: Doc only update to add Ubuntu 22.04 as an Image ID option for Cloud9
+* `github.com/aws/aws-sdk-go-v2/service/ec2`: [v1.114.0](service/ec2/CHANGELOG.md#v11140-2023-08-21)
+  * **Feature**: The DeleteKeyPair API has been updated to return the keyPairId when an existing key pair is deleted.
+* `github.com/aws/aws-sdk-go-v2/service/finspace`: [v1.12.0](service/finspace/CHANGELOG.md#v1120-2023-08-21)
+  * **Feature**: Allow customers to manage outbound traffic from their Kx Environment when attaching a transit gateway by providing network acl entries. Allow the customer to choose how they want to update the databases on a cluster allowing updates to possibly be faster than usual.
+* `github.com/aws/aws-sdk-go-v2/service/polly`: [v1.30.0](service/polly/CHANGELOG.md#v1300-2023-08-21)
+  * **Feature**: Add support for polly SynthesizeSpeech GET request presigner
+* `github.com/aws/aws-sdk-go-v2/service/rds`: [v1.51.0](service/rds/CHANGELOG.md#v1510-2023-08-21)
+  * **Feature**: Adding support for RDS Aurora Global Database Unplanned Failover
+* `github.com/aws/aws-sdk-go-v2/service/route53domains`: [v1.17.3](service/route53domains/CHANGELOG.md#v1173-2023-08-21)
+  * **Documentation**: Fixed typos in description fields
+
 # Release (2023-08-18)
 
 ## General Highlights

vendor/github.com/aws/aws-sdk-go-v2/aws/go_module_metadata.go

@@ -3,4 +3,4 @@
 package aws
 
 // goModuleVersion is the tagged release for this module
-const goModuleVersion = "1.20.3"
+const goModuleVersion = "1.21.0"

vendor/github.com/aws/aws-sdk-go-v2/aws/protocol/query/object.go

@@ -41,6 +41,12 @@ func (o *Object) Key(name string) Value {
 	return o.key(name, false)
 }
 
+// KeyWithValues adds the given named key to the Query object.
+// Returns a Value encoder that should be used to encode a Query list of values.
+func (o *Object) KeyWithValues(name string) Value {
+	return o.keyWithValues(name, false)
+}
+
 // FlatKey adds the given named key to the Query object.
 // Returns a Value encoder that should be used to encode a Query value type. The
 // value will be flattened if it is a map or array.
@@ -54,3 +60,10 @@ func (o *Object) key(name string, flatValue bool) Value {
 	}
 	return newValue(o.values, name, flatValue)
 }
+
+func (o *Object) keyWithValues(name string, flatValue bool) Value {
+	if o.prefix != "" {
+		return newAppendValue(o.values, fmt.Sprintf("%s.%s", o.prefix, name), flatValue)
+	}
+	return newAppendValue(o.values, name, flatValue)
+}

vendor/github.com/aws/aws-sdk-go-v2/aws/protocol/query/value.go

@@ -27,6 +27,15 @@ func newValue(values url.Values, key string, flat bool) Value {
 	}
 }
 
+func newAppendValue(values url.Values, key string, flat bool) Value {
+	return Value{
+		values:     values,
+		key:        key,
+		flat:       flat,
+		queryValue: httpbinding.NewQueryValue(values, key, true),
+	}
+}
+
 func newBaseValue(values url.Values) Value {
 	return Value{
 		values:     values,