feature(slo): Run transforms unattended

[kdelemme]

Resolves #166954

Summary

This PR creates the SLO transforms in unattended mode.
I've also updated the summary transform installation to use a specific version number.

[apmmachine]

🤖 GitHub comments

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Just comment with:

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

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 4e0e82f

Failed CI Steps

• FTR Configs #14

Test Failures

• [job] [logs] FTR Configs #14 / Profiling API tests has_setup.spec.ts cloud Loading profiling data Profiling status check APM integration is not installed Admin user has been set up

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @kdelemme

[elasticmachine]

Pinging @elastic/actionable-observability (Team: Actionable Observability)

[simianhacker]

LGTM