### Description
Move Linux Github actions to a dedicated pool. Currently the
"orttraining-linux-ci-pipeline " is too slow.
### Motivation and Context
To speed up the running.
* Add cffconvert.yml to validate CITATION.cff
* Fix CITATION.cff by removing duplicate title and correcting the license
Co-authored-by: Abel Soares Siqueira <abel.s.siqueira@gmail.com>