[Profiling] Switch to 19Hz sampling frequency

[rockdaboot]

Summary

With 9.0.0, profiling switches to 19Hz default sampling frequency.

Checklist

Check the PR satisfies following conditions.

Reviewers should verify this PR satisfies this list as well.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This was checked for breaking HTTP API changes, and any breaking changes have been approved by the breaking-change committee. The release_note:breaking label should be applied in these situations.
• Flaky Test Runner was used on any tests changed
• The PR description includes the appropriate Release Notes section, and the correct release_note:* label is applied per the guidelines

Identify risks

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Describe the risk, its severity, and mitigation for each identified risk. Invite stakeholders and evaluate how to proceed before merging.

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[github-actions]

🤖 GitHub comments

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Just comment with:

• /oblt-deploy : Deploy a Kibana instance using the Observability test environments.
• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[cauemarcondes]

LGTM

[cauemarcondes]

/ci

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 9b03642
• Kibana Serverless Image: docker.elastic.co/kibana-ci/kibana-serverless:pr-202278-9b03642cd337

Failed CI Steps

• Jest Tests #20
• FTR Configs #4

Test Failures

• [job] [logs] FTR Configs #4 / Detection Engine - Exception Lists and Items APIs Exception Lists - Lists APIs @ess @serverless @serverlessQA import_exceptions "overwrite" is false should report that it imported an exception list with multiple items successfully

Metrics [docs]

✅ unchanged

History

• 💚 Build #255651 succeeded 9b03642
• 💚 Build #255602 succeeded 12b1087

cc @rockdaboot