Bump ui v2.6.7-rc5-kube-explorer-ui-rc2 [CI SKIP]

Dockerfile.dapper

@@ -22,7 +22,7 @@ RUN wget -O - ${!DOCKER_URL} > /usr/bin/docker && chmod +x /usr/bin/docker
 ENV GIT_COMMIT="591cb7816f12c4936f355666fc8bf9b9f63fa806" \
     GIT_BRANCH="ke/v0.2" \
     GIT_SOURCE="/go/src/github.com/rancher/steve" \
-    CATTLE_DASHBOARD_UI_VERSION="v2.6.7-rc5-kube-explorer-ui-rc1"
+    CATTLE_DASHBOARD_UI_VERSION="v2.6.7-rc5-kube-explorer-ui-rc2"
 
 ENV DAPPER_ENV REPO TAG DRONE_TAG CROSS
 ENV DAPPER_SOURCE /opt/kube-explorer