fix(TestAgent): update superagent's Agent instantiation due to was cl…

[Santiagomrn]

#833

Checklist

• I have ensured my pull request is not behind the main or master branch of the original repository.
• I have rebased all commits where necessary so that reviewing this pull request can be done without having to merge it first.
• I have written a commit message that passes commitlint linting.
• I have ensured that my code changes pass linting tests.
• I have ensured that my code changes pass unit tests.
• I have described my pull request and the reasons for code changes along with context if necessary.

[titanism]

Closing in favor of #834 - if you had thoughts/argument as to why your approach is better please let us know