rebase: bump github.com/aws/aws-sdk-go-v2/service/sts

Bumps [github.com/aws/aws-sdk-go-v2/service/sts](https://github.com/aws/aws-sdk-go-v2) from 1.18.2 to 1.18.3.
- [Release notes](https://github.com/aws/aws-sdk-go-v2/releases)
- [Changelog](https://github.com/aws/aws-sdk-go-v2/blob/main/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-go-v2/compare/config/v1.18.2...config/v1.18.3)

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

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

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 = "1.17.3"
+const goModuleVersion = "1.17.4"

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

@@ -36,20 +36,31 @@ type Array struct {
 	memberName string
 	// Elements are stored in values, so we keep track of the list size here.
 	size int32
+	// Empty lists are encoded as "<prefix>=", if we add a value later we will
+	// remove this encoding
+	emptyValue Value
 }
 
 func newArray(values url.Values, prefix string, flat bool, memberName string) *Array {
+	emptyValue := newValue(values, prefix, flat)
+	emptyValue.String("")
+
 	return &Array{
 		values:     values,
 		prefix:     prefix,
 		flat:       flat,
 		memberName: memberName,
+		emptyValue: emptyValue,
 	}
 }
 
 // Value adds a new element to the Query Array. Returns a Value type used to
 // encode the array element.
 func (a *Array) Value() Value {
+	if a.size == 0 {
+		delete(a.values, a.emptyValue.key)
+	}
+
 	// Query lists start a 1, so adjust the size first
 	a.size++
 	prefix := a.prefix