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 1.16.19 to 1.21.1.
- [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](aws/aws-sdk-go-v2@service/ram/v1.16.19...service/efs/v1.21.1)

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

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

extension/sigv4authextension/go.mod

@@ -3,10 +3,10 @@ module github.com/open-telemetry/opentelemetry-collector-contrib/extension/sigv4
 go 1.18
 
 require (
-	github.com/aws/aws-sdk-go-v2 v1.16.16
+	github.com/aws/aws-sdk-go-v2 v1.20.0
 	github.com/aws/aws-sdk-go-v2/config v1.17.7
 	github.com/aws/aws-sdk-go-v2/credentials v1.12.20
-	github.com/aws/aws-sdk-go-v2/service/sts v1.16.19
+	github.com/aws/aws-sdk-go-v2/service/sts v1.21.1
 	github.com/stretchr/testify v1.8.0
 	go.opentelemetry.io/collector v0.60.1-0.20220923151520-96e9af35c002
 	go.uber.org/zap v1.23.0
@@ -15,13 +15,13 @@ require (
 
 require (
 	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.12.17 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.23 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.17 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.37 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.31 // indirect
 	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.24 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.17 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.31 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sso v1.11.23 // indirect
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.13.5 // indirect
-	github.com/aws/smithy-go v1.13.3 // indirect
+	github.com/aws/smithy-go v1.14.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect