[7.17](backport #42825) Added binfmt to beats packaging step

[mergify]

Proposed commit message

Added binfmt docker to run before packaging for multiarch builds to avoid the exec format errors when attempting to build arm64 inside arm64 workers.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Related issues

• Relates: Fix stability issues with cross compilation in CI golang-crossbuild#507

Logs

Buildkite builds: https://buildkite.com/elastic/beats/builds?branch=elastic%3Aupdate-packaging

---

This is an automatic backport of pull request #42825 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 5409677 has failed:

On branch mergify/bp/7.17/pr-42825
Your branch is up to date with 'origin/7.17'.

You are currently cherry-picking commit 5409677da.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   .buildkite/filebeat/filebeat-pipeline.yml
	modified:   .buildkite/heartbeat/heartbeat-pipeline.yml
	modified:   .buildkite/metricbeat/pipeline.yml
	modified:   .buildkite/packetbeat/pipeline.packetbeat.yml
	new file:   .buildkite/scripts/packaging/packaging.sh
	modified:   .buildkite/winlogbeat/pipeline.winlogbeat.yml
	modified:   .buildkite/x-pack/pipeline.xpack.auditbeat.yml
	modified:   .buildkite/x-pack/pipeline.xpack.dockerlogbeat.yml
	modified:   .buildkite/x-pack/pipeline.xpack.filebeat.yml
	modified:   .buildkite/x-pack/pipeline.xpack.heartbeat.yml
	modified:   .buildkite/x-pack/pipeline.xpack.metricbeat.yml
	modified:   .buildkite/x-pack/pipeline.xpack.osquerybeat.yml
	modified:   .buildkite/x-pack/pipeline.xpack.packetbeat.yml

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   .buildkite/auditbeat/auditbeat-pipeline.yml
	deleted by us:   .buildkite/x-pack/pipeline.xpack.agentbeat.yml
	both modified:   .buildkite/x-pack/pipeline.xpack.winlogbeat.yml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[dliappis]

LGTM