[Snyk] Security upgrade alpine from 3.15 to 3.16

[platform-ingest]

This PR was automatically created by Snyk using the credentials of a real user.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• dev-tools/kubernetes/metricbeat/Dockerfile.run

We recommend upgrading to alpine:3.16, as this image has only 0 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

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[botelastic]

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[mergify]

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @platform-ingest? 🙏.
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To fixup this pull request, you need to add the backport labels for the needed
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• backport-v8./d.0 is the label to automatically backport to the 8./d branch. /d is the digit

[elasticmachine]

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• Start Time: 2023-03-23T14:53:41.374+0000

• Duration: 79 min 54 sec

Test stats 🧪

Test	Results
Failed	0
Passed	26044
Skipped	1965
Total	28009

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[mergify]

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @platform-ingest? 🙏.
For such, you'll need to label your PR with:

• The upcoming major version of the Elastic Stack
• The upcoming minor version of the Elastic Stack (if you're not pushing a breaking change)

To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v8./d.0 is the label to automatically backport to the 8./d branch. /d is the digit