Release v1.44.0/v0.138.0

[github-actions[bot]]

Like #4522, but for v1.44.0/v0.138.0 Performed by collector release manager

• [x] Prepare core release v1.44.0/v0.138.0
• [x] Tag and release core v1.44.0/v0.138.0
• [x] Prepare contrib release v0.138.0
• [x] Tag and release contrib v0.138.0
• [x] Prepare otelcol-releases v0.138.0
• [x] Release binaries and container images v0.138.0

Performed by operator maintainers

• [ ] https://github.com/open-telemetry/opentelemetry-operator/issues/4446

Performed by helm chart maintainers

• [x] https://github.com/open-telemetry/opentelemetry-helm-charts/issues/1907