update sntp

[hwalker56]

• Have you checked that there aren't other open pull requests for the same manifest update/change?
• Have you verified that the manifest contains valid JSON?
• Are you certain that this manifest is not designed to obtain copyrighted material or software, which you do not have permission to distribute?
• Submitting malicious software is strictly forbidden, and potentially constitutes criminal activity, punishable by law. To the best of your knowledge, is this submission clear of any malicious intent?

Note: filename.oscmeta is the slug of the application you are submitting. This slug is used to locate files such as "/apps/slug/boot.dol" and "/apps/slug/meta.xml" in the final archive generated by this manifest. These files should be available at this location.

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sntp doesn't use github releases, this changes the url to the latest release

[GabubuAvailable]

Since you are updating from 1.2.0 to 1.3.0, consider updating the "version" part from line 17 as well.

[hwalker56]

Apologies, completely missed that, should be good now!

[GabubuAvailable]

All good now, thank you!