Unhandled exception in sources.py causing crash under specific conditions

[jess-lowe]

Describe the bug Due to an unhandled exception in the importer/sources.py file, when the schema validation of a file fails, the cron job was being killed. https://github.com/google/osv.dev/blob/7efca9136ce630a25f2a754d4b18148b0e0b8c4d/osv/sources.py#L169C2-L173C12 This was noticed as the prefix of a new data source was missing from the schema.

Screenshots

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[another-rex]

Currently does not crash the entire importer, but will stop the import of that source.

Next step, we should make this notify us, and continue processing the other records in that source.