* Upgrade localstack

* Fix the dynamodb integration tests

The new localstack version emulates AWS better, returning a consumed
capacity only when the request asks for it.

* Update the Sts integration test for the new localstack return values

* Update the route53 expectation for the listing endpoint

In the new localstack version, creating a zone automatically creates the
NS and SOA records for that zone, emulating what actually happens on
AWS.

* Switch to 3.0.0

* Skip bad test for now

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Co-authored-by: Christophe Coevoet <stof@notk.org>