Update modules go.elastic.co/apm/* to v2.4.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go.elastic.co/apm/v2	require	minor	v2.3.0 -> v2.4.1

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Release Notes

elastic/apm-agent-go

v2.4.1

Compare Source

What's changed

• Downgrade OpenTelemetry metrics from v1.15.0-rc.2 to 0.37.0 #​1420
• Mark OpenTelemetry metrics as technical preview #​1419

v2.4.0

Compare Source

What's Changed

• ci: remove notification and leftovers Jenkins #​1408
• OpenTelemetry metrics exporter #​1407
• docs: remove kibana.enabled requirement #​1411
• OpenTelemetry tracing bridge #​1410
• Only upgrade goversion in genmod, don't downgrade #​1418

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[thbkrkr]

@elasticmachine run elasticsearch-ci/docs