Amazon Bedrock system test - Skip Provisioned Throughput workflow

[ferruzzi]

The Bedrock team recently implemented a restriction against internal teams creating no-commitment throughput in order to reserve that capacity for public users. That change causes this test to fail with a ServiceQuotaExceededException when run in our internal team system test dashboard stack. Skipping that block of the test will allow us to retain the sample code snippets and get the test passing again, albeit without actually testing that API call anymore.

---

^ Add meaningful description above Read the Pull Request Guidelines for more information. In case of fundamental code changes, an Airflow Improvement Proposal (AIP) is needed. In case of a new dependency, check compliance with the ASF 3rd Party License Policy. In case of backwards incompatible changes please leave a note in a newsfragment file, named {pr_number}.significant.rst or {issue_number}.significant.rst, in newsfragments.