fix(deploy): extract first json from zip file

[saadjutt01]

Issue

Closes #211

Intent

rather than insist on a file with the same name as the zip, we should just check that the content is a single, valid, json file

Implementation

Extracting first json file present in zip file.

Checks

• [ ] Code is formatted correctly (npm run lint:fix).
• [ ] Any new functionality has been unit tested.
• [ ] All unit tests are passing (npm test).
• [ ] All CI checks are green.
• [ ] Reviewer is assigned.

[ghost]

:tada: This PR is included in version 0.8.3 :tada:

The release is available on:

• GitHub release
• v0.8.3

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