Ignore Mysql2::Error exceptions during data sync
Ignore Mysql2::Error exceptions during data sync

When staging and integration reset their databases overnight, there can
be MySQL errors (example [1]). These errors can't be avoided, because of
our configuration, however they can be ignored by specifying them as
exceptions to be excluded during the data sync.

[1]: https://sentry.io/organizations/govuk/issues/3231309323/?project=202259&referrer=slack

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