Merge branch 'rodrigo/fix-github-import-when-exception-occurs' into 'master'

Fix GitHub Import workers from aborting when rate limit is reached

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/132813



Merged-by: Etienne Baqué <ebaque@gitlab.com>
Approved-by: Etienne Baqué <ebaque@gitlab.com>
Reviewed-by: Etienne Baqué <ebaque@gitlab.com>
Reviewed-by: Jessie Young <jessieyoung@gitlab.com>
Co-authored-by: Rodrigo Tomonari <rtomonari@gitlab.com>