fix(stepfunctions): integration test after ASL service update

[witness-me]

Problem

Integration test for SFN was broken after updating amazon-states-language-service package to 1.13.0 (relevant PR)

Solution

Updating integration test to account for the new QueryLanguage variable introduced in the new version of the package

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License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

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