Pin dependencies and update vendors

vendor/github.com/golang/protobuf/protoc-gen-go/plugin/BUILD

@@ -0,0 +1,27 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["plugin.pb.go"],
+    importmap = "k8s.io/kubernetes/vendor/github.com/golang/protobuf/protoc-gen-go/plugin",
+    importpath = "github.com/golang/protobuf/protoc-gen-go/plugin",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//vendor/github.com/golang/protobuf/proto:go_default_library",
+        "//vendor/github.com/golang/protobuf/protoc-gen-go/descriptor:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)