Run copyright and license linter on committed files only

* Bump revision of REUSE pre-commit hook to latest.

* Lint only committed files for the correct copyright and license. This prevents the pre-commit hook from failing checks on new files in the source tree that are not intended to be committed.

Signed-off-by: Jakub Sujak <jakub.sujak@arm.com>

Approved-by: Felix Johnny Thomasmathibalan <felixjohnny.thomasmathibalan@arm.com>