[CI/CD] automated alerts on load tests regression

[songy23]

Component(s)

testbed

Describe the issue you're reporting

Originated from http://github.com/open-telemetry/opentelemetry-collector-contrib/issues/38259#issuecomment-2710618394

[github-actions]

Pinging code owners:

• testbed: @open-telemetry/collector-approvers

See Adding Labels via Comments if you do not have permissions to add labels yourself.