Update opentelemetry-opamp-client version to v0.4b0 (#4812)

* Update opentelemetry-opamp-client version to v0.4b0

* Apply suggestion from @xrmx

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Co-authored-by: otelbot <197425009+otelbot@users.noreply.github.com>
Co-authored-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>

otelbot[bot] committed 1mo ago

300c5f28d41d33605a25935ba326e648e0a0e7dd

Parent: ee7a74a

Committed by GitHub <noreply@github.com> on 7/16/2026, 10:06:24 AM