Fix the `requested_extras` parsing for pip report

[pauld-msft]

3.5% of all pipreport builds are failing to deserialize the pip report requested_extras section with an error similar to: "Deserialized JSON type 'Newtonsoft.Json.Linq.JArray' is not compatible with expected type 'Newtonsoft.Json.Linq.JObject'. Path 'install[101].requested_extras', line 5379, position 7."

This updates the type from JObject to JArray to resolve the deserialization error.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 76.3%. Comparing base (9f1e5a9) to head (8f30617).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1154 +/- ## ===================================== Coverage 76.3% 76.3% ===================================== Files 255 255 Lines 11303 11303 Branches 1134 1134 ===================================== + Hits 8625 8626 +1 + Misses 2346 2345 -1 Partials 332 332 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[github-actions[bot]]

👋 Hi! It looks like you modified some files in the Detectors folder. You may need to bump the detector versions if any of the following scenarios apply:

• The detector detects more or fewer components than before
• The detector generates different parent/child graph relationships than before
• The detector generates different devDependencies values than before

If none of the above scenarios apply, feel free to ignore this comment 🙂