feat: upgrade to bobcat (#887)

diff --git a/images/barbican/Earthfile b/images/barbican/Earthfile
index af81b11..0c843ff 100644
--- a/images/barbican/Earthfile
+++ b/images/barbican/Earthfile
@@ -1,15 +1,19 @@
 VERSION 0.7
 
+ARG --global PROJECT=barbican
+ARG --global RELEASE=2023.2
+ARG --global PROJECT_REF=a00fcade4138ffc52cd9c84b5999297966f019b5
+
+build:
+  FROM ../openstack-service+builder --RELEASE=${RELEASE}
+  DO ../openstack-service+BUILD_VENV \
+    --PROJECT=${PROJECT} \
+    --PROJECT_REF=${PROJECT_REF} \
+    --PIP_PACKAGES="pykmip"
+
 image:
-  ARG PROJECT=barbican
-  ARG RELEASE=zed
-  ARG REF=7d6749fcb1ad16a3350de82cd8e523d5b55306f8
-  FROM ../openstack-service+image \
-    --PROJECT ${PROJECT} \
-    --RELEASE ${RELEASE} \
-    --PROJECT_REF ${REF} \
-    --PIP_PACKAGES "pykmip"
-  DO ../+APPLY_PATCHES
+  FROM ../openstack-service+image --RELEASE ${RELEASE} --PROJECT ${PROJECT}
+  COPY +build/venv /var/lib/openstack
   SAVE IMAGE --push \
     ghcr.io/vexxhost/atmosphere/${PROJECT}:${RELEASE} \
-    ghcr.io/vexxhost/atmosphere/${PROJECT}:${REF}
+    ghcr.io/vexxhost/atmosphere/${PROJECT}:${PROJECT_REF}