[CI] remove local dependency description from kbn-yaml-loader

[delanni]

Summary

Clean installs will fail with

error Error: ENOENT: no such file or directory, lstat '/Users/tkajtoch/dev/kibana/src/platform/packages/shared/kbn-yaml-loader/node_modules/yaml

It's probably because we have locally installed specific version of the package. Some of our conventions in Kibana rely on not using locally setup dependencies, but we relied on central dep management in the root.

This PR removes the local dependency

[elasticmachine]

⏳ Build in-progress, with failures

• Buildkite Build
• Commit: 7681705

Failed CI Steps

• FTR Configs #131
• affected Scout: [ platform / streams_app-stateful-classic ] plugin
• affected Scout: [ platform / streams_app-stateful-classic ] plugin

Test Failures

• [job] [logs] FTR Configs #131 / InfraOps App Metrics UI Hosts View #With data #Single Host Flyout Tabs Dashboards Tab should render dashboards tab splash screen with option to add dashboard
• [job] [logs] affected Scout: [ platform / streams_app-stateful-classic ] plugin / local-stateful-classic - Stream data routing - AI suggestions editing validation - should show error when editing suggestion with duplicate name
• [job] [logs] affected Scout: [ platform / streams_app-stateful-classic ] plugin / local-stateful-classic - Stream data routing - AI suggestions editing validation - should show error when editing suggestion with duplicate name

[juliaElastic]

@delanni Can we backport this PR? The PR updating the dependency is backported to all open branches: #263105

Never mind, #252345 was not backported.