Sast/async json spike

[sburmanoctopus]

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Background

Results

Fixes https://github.com/OctopusDeploy/Issues/issues/... (optional public issue)

Fixes https://github.com/OctopusDeploy/ResearchAndDevelopment/issues/... (optional private issue)

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Pre-requisites

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• [ ] I have considered appropriate testing for my change.

[nathanwoctopusdeploy]

[sc-53133]

[shortcut-integration[bot]]

This pull request has been linked to Shortcut Story #53133: Halibut: Investigate JsonSerializer and Async support.