doc,yocto/fvp-rd-n2-automotive: Update FVP for new release candidate

Bump the FVP package release candidate version in docs and update its public
download URL and sha256sum tarball.

Issue-Id: SCM-5314
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Change-Id: I74fdb73d3886986d93da08e55a6d52b718ad0fef