Bump github.com/aws/aws-sdk-go in /internal/aws/proxy

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.43.22 to 1.44.32.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Changelog](https://github.com/aws/aws-sdk-go/blob/main/CHANGELOG.md)
- [Commits](aws/aws-sdk-go@v1.43.22...v1.44.32)

---
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>

internal/aws/proxy/go.mod

@@ -3,7 +3,7 @@ module github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/pr
 go 1.17
 
 require (
-	github.com/aws/aws-sdk-go v1.44.47
+	github.com/aws/aws-sdk-go v1.44.50
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/common v0.55.0
 	github.com/stretchr/testify v1.8.0
 	go.opentelemetry.io/collector v0.55.0