leverage enhanced ims context handling

[jsedding]

Description

Change leveraging enhanced IMS context handling implemented in adobe/aio-lib-ims#150. This is currently only a draft, because it requires a new version of aio-lib-ims to be released and set on this PR.

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[RemoLiechti]

LGTM, tests are now all fixed, thanks