Fix Codecov

[atharva-2001]

:pencil: Description

Type: :beetle: bugfix | :vertical_traffic_light: testing | :roller_coaster: infrastructure

This will combine codecov reports from our parallel setup and will give accurate coverage reports. This will also fix the failing token not found issue in the test pre-release pull request- https://github.com/tardis-sn/tardis/pull/2741

:pushpin: Resources

Examples, notebooks, and links to useful references.

:vertical_traffic_light: Testing

How did you test these changes?

• [ ] Testing pipeline
• [ ] Other method (describe)
• [ ] My changes can't be tested (explain why)

:ballot_box_with_check: Checklist

• [ ] I requested two reviewers for this pull request
• [ ] I updated the documentation according to my changes
• [ ] I built the documentation by applying the build_docs label

Note: If you are not allowed to perform any of these actions, ping (@) a contributor.

[codecov[bot]]

Codecov Report

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

Project coverage is 69.05%. Comparing base (b7eb16b) to head (e0b7847).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2742 +/- ## =========================================== + Coverage 36.50% 69.05% +32.54% =========================================== Files 186 186 Lines 14922 14922 =========================================== + Hits 5448 10304 +4856 + Misses 9474 4618 -4856 ```

:umbrella: View full report in Codecov by Sentry.
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