OpenTelemetry v0.154.0

This release focuses on hardening the collector's configuration layer, fixing a critical startup panic related to exporter queues, and refining the tools used by developers to build and validate custom components. It also introduces more granular control over HTTP CORS and TLS security settings.

Fix startup crash in exporter sending queue configuration — This prevents a critical crash during collector startup. If you were attempting to use a custom sizer for your sending queue without batching enabled, the collector would previously fail to start due to a nil-pointer panic.