[0.71][RN][General] Migrate boost download url away from JFrog

[cipolleschi]

Summary:

JFrog is down and it's making all the iOS build fails. Reference: #42110

Changelog:

[Internal] - Change url from where boost is downloaded

Test Plan:

CI is green

[imalgrab]

question: I have a project using react-native: 0.71.6. How can I make use of this hotfix? Update the version to 0.71-stable? Or just edit the spec.source locally and keep it in mind in future updates?

[liamjones]

@imalgrab see the explanation about how to apply the workaround on #42180

[imalgrab]

@liamjones this is what I thought, thanks!

[shmkane]

@imalgrab They've released the fix for RN version 0.72 (0.72.9) ~40 mins ago at the time of writing this. I can only assume the fixes for 0.73, 0.71 will follow shortly. However, they have stated on 0.70:

Notice also that 0.70 is technically out of the support window. We might or might not release a new version of it, we still need to assess the impact on that version.