release: update version file for v1.8.0-rc5

Signed-off-by: David Ko <dko@suse.com>

release: update version file for v1.8.0-rc4

Signed-off-by: David Ko <dko@suse.com>

release: update version file for v1.8.0-rc3

Signed-off-by: David Ko <dko@suse.com>

fix(deps): update patch digest dependencies

fix(deps): update patch digest dependencies

fix(deps): update github.com/longhorn/go-common-libs digest to ec79818

fix(deps): update module github.com/longhorn/longhorn-engine to v1.6.4

release: update version file for v1.6.4

Signed-off-by: David Ko <dko@suse.com>

release: update version file for v1.6.4-rc2

Signed-off-by: David Ko <dko@suse.com>

release: update version file for v1.8.0-rc2

Signed-off-by: David Ko <dko@suse.com>