Stream Enrich: bump AWS SDK to 2.13.50

[szareiangm]

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Project: Stream Enrich

Version: 1.1.0

Expected behavior: Credentials provider is not compatible with KCL v2.

Actual behavior: Use the latest library.

Steps to reproduce:

I am on my way to upgrade KCL to v2: https://github.com/globeandmail/snowplow/pull/10

However, between source and sink there is a provider mutual variable. The KCL v2 uses a new class from SDK v2 and the Sink is still on v1. Here is the migration guide that shows differences I need to upgrade the sink to make the authentication consistent in the enricher.