vendor: update buildkit

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/cyphar/filepath-securejoin/.travis.yml

@@ -0,0 +1,21 @@
+# Copyright (C) 2017 SUSE LLC. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+language: go
+go:
+    - 1.13.x
+    - 1.16.x
+    - tip
+arch:
+    - AMD64
+    - ppc64le
+os:
+    - linux
+    - osx
+
+script:
+    - go test -cover -v ./...
+
+notifications:
+    email: false