Fixing SunsetAirFlightData reference and test

[DavidGonzalezPineiro]

Fixes #21

Description

• Corrected the KafkaSource builder for sunsetSource in FlightImporterJob.java to use the proper generic type SunsetAirFlightData instead of mistakenly using SkyOneAirlinesFlightData.

• Enhanced the SunsetAirFlightDataTest by updating the JSON test input and adding a more thorough deserialization test that:

  • Uses the correct JSON property names matching the model.
  • Parses ZonedDateTime fields with explicit UTC zone handling.
  • Verifies full object equality after deserialization, ensuring unknown JSON fields are safely ignored.

Checklist

• Unit tests created/updated for any new code (where applicable).
• Run all tests with ./build.sh validate.
• Update the CHANGELOG.md.
• Update the README.md if necessary.

[confluent-cla-assistant]

🎉 All Contributor License Agreements have been signed. Ready to merge.
✅ DavidGonzalezPineiro
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[WadeWaldron]

This looks great. Thanks for the changes.

[WadeWaldron]

@DavidGonzalezPineiro If you can sign the Contributor License Agreement (see above), we can get this merged.

[DavidGonzalezPineiro]

Done. Thank you! I'm glad you liked it. And many thanks to you as well for all your great work!