vmware-k8s-1.29-fips: enable erofs root partition

Signed-off-by: Matthew Yeazel <yeazelm@amazon.com>

Author: yeazelm

variants/vmware-k8s-1.33-fips/Cargo.toml

@@ -16,6 +16,7 @@ partition-plan = "unified"
 grub-set-private-var = true
 uefi-secure-boot = true
 xfs-data-partition = true
+erofs-root-partition = true
 systemd-networkd = true
 fips = true
 external-kmod-development = false