third_party: move go patches into their own folder

Change-Id: I7e2f2790e233aaf13cfd6ed2ffcf5544461a4f39
Reviewed-on: https://review.monogon.dev/c/monogon/+/3822
Tested-by: Jenkins CI
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
diff --git a/metropolis/node/kubernetes/hyperkube/BUILD.bazel b/metropolis/node/kubernetes/hyperkube/BUILD.bazel
index 406ec7d..9fb4c22 100644
--- a/metropolis/node/kubernetes/hyperkube/BUILD.bazel
+++ b/metropolis/node/kubernetes/hyperkube/BUILD.bazel
@@ -1,5 +1,5 @@
-load("@//third_party/go:kubernetes_version_def.bzl", "version_x_defs")
 load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+load(":kubernetes_version_def.bzl", "version_x_defs")
 
 go_library(
     name = "hyperkube_lib",