devtools: bump to Go 1.15.5

Change-Id: Ib6d60478a49776c719ab3f05aa43c497be82d5f2
diff --git a/devtools/kube/depotview.libsonnet b/devtools/kube/depotview.libsonnet
index 179a0ad..019542c 100644
--- a/devtools/kube/depotview.libsonnet
+++ b/devtools/kube/depotview.libsonnet
@@ -3,7 +3,7 @@
 
 {
     cfg:: {
-        image: "registry.k0.hswaw.net/devtools/depotview:1586695514-ac43b3edac4df7964cbe349f8e39f6346871ea3d",
+        image: "registry.k0.hswaw.net/q3k/depotview:1606469687-42b21ecd84b713faf1c65c4ddceb74f559fe94bd",
     },
 
     component(cfg ,env):: mirko.Component(env, "depotview") {