[8.14] Upgrade Node.js to 20.15.1 (#187791)

[jbudz]

#187791

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💛 Build succeeded, but was flaky

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• Commit: 1c74231

Failed CI Steps

• FTR Configs #39
• Detection Engine - Security Solution Cypress Tests #3

Test Failures

• [job] [logs] FTR Configs #39 / Alerting transform alert rule types transform_health rule runs correctly
• [job] [logs] Detection Engine - Security Solution Cypress Tests #3 / Threshold rules Creates a new threshold rule with suppression enabled Creates a new threshold rule with suppression enabled

Metrics [docs]

✅ unchanged

History