Unfortunately there's no way to resize a virtual disk with snapshots (linked clones are snapshots). If you need to resize the base disk, you first need to delete all the snapshots/linked clones.
To avoid this is the future, you may choose a larger size for the base disk/template. With the default sparse virtual disk format VMware Workstation uses, this will not result in a much larger base disk, but the clones can grow up to the provisioned size.
André