chore(deps): update neutron digest to 222c997 (#866)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
diff --git a/images/neutron/Earthfile b/images/neutron/Earthfile
index e8fbf6d..8b61017 100644
--- a/images/neutron/Earthfile
+++ b/images/neutron/Earthfile
@@ -3,7 +3,7 @@
 platform-image:
   ARG PROJECT=neutron
   ARG RELEASE=zed
-  ARG REF=4575136fe99f67dc140987601c90493cf62c0330
+  ARG REF=222c997022392561c2de2cb493f0f5214eb20dfc
   FROM ../openstack-service+image \
     --PROJECT ${PROJECT} \
     --RELEASE ${RELEASE} \