fix: add missing HTTP error handling in MassScannersCron and WhatsMyI…

[remo-lab]

Description

Adds proper HTTP error handling to MassScannersCron and WhatsMyIPCron.

Both cronjobs previously performed HTTP requests without checking response status or handling request failures. This could lead to silent failures (MassScannersCron) or unhandled exceptions (WhatsMyIPCron).

This change aligns them with the existing pattern already used in FireHolCron and TorExitNodesCron.

Related issues

Closes #814

Type of change

• Bug fix (non-breaking change which fixes an issue).

Checklist

• I have read and understood the rules about how to Contribute to this project.
• The pull request is for the branch develop.
• I have added documentation of the new features.
• Linter (Ruff) gave 0 errors.
• I have added tests for the feature/bug I solved. All the tests (new and old ones) gave 0 errors.
• If changes were made to an existing model/serializer/view, the docs were updated and regenerated.
• If the GUI has been modified:
  • I have provided a screenshot of the result in the PR.
  • I have created new frontend tests for the new component or updated existing ones.

[remo-lab]

@regulartim , please take a look on this whenever you have time!

[regulartim]

Looks good! 👍
Could you please add tests for the new error handling paths?

[remo-lab]

@regulartim ,I have added tests for all the new error handling — HTTP errors, network failures, timeouts, invalid JSON, and missing keys. Also made sure execute() marks the task as failed in each case. Let me know if you'd like any changes!

[regulartim]

Cool, will review tomorrow. Your git history however is not as it should be, it contains every commit from main. Did you create your feature branch based on main instead of develop? If so, please fix this.

[remo-lab]

sorry for that i will fix it asap.

[remo-lab]

Fixed the branch base — rebased onto develop so the history is clean now. Ready for review!

[regulartim]

Good job! 👍

[remo-lab]

Thanks for your review