Merge pull request #8774 from zalando-incubator/skipper/update-main-v0.21.247

skipper: update main to v0.21.247

Author: AlexanderYastrebov

cluster/manifests/skipper/deployment.yaml

@@ -1,6 +1,6 @@
 {{/* image-updater-bot detects *image variables so use print to disable it for main image */}}
 
-{{ $main_image := print "container-registry.zalando.net/teapot/skipper-internal:" "v0.21.240-1063" }}
+{{ $main_image := print "container-registry.zalando.net/teapot/skipper-internal:" "v0.21.247-1070" }}
 {{ $canary_image := "container-registry.zalando.net/teapot/skipper-internal:v0.21.247-1070" }}