build(deps): bump github.com/spf13/cobra from 1.5.0 to 1.6.0

Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/spf13/cobra/releases)
- [Commits](https://github.com/spf13/cobra/compare/v1.5.0...v1.6.0)

---
updated-dependencies:
- dependency-name: github.com/spf13/cobra
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

PH: manually update the completion scripts and fix deprecated function
call.

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Paul Holzinger <pholzing@redhat.com>

vendor/github.com/spf13/cobra/zsh_completions.go

@@ -1,3 +1,17 @@
+// Copyright 2013-2022 The Cobra Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package cobra
 
 import (