[SEBA-559] Update k8s in SIAB to 1.12.7

Change-Id: Ib57ee902fd96411b8100f60aaa72c545b0c0210a
diff --git a/seba-in-a-box/Makefile b/seba-in-a-box/Makefile
index aec39c7..a2d2f22 100644
--- a/seba-in-a-box/Makefile
+++ b/seba-in-a-box/Makefile
@@ -13,7 +13,7 @@
 
 DOCKER_VERSION  ?= "17.06"
 
-K8S_VERSION     ?= "1.12.4"
+K8S_VERSION     ?= "1.12.7"
 
 HELM_VERSION    ?= "2.12.1"
 HELM_SHA256SUM  ?= "891004bec55431b39515e2cedc4f4a06e93782aa03a4904f2bd742b168160451"