Ensure compatibility with the latest OTel SDK

[kolesnikovae]

Go OTel SDK version 1.20 introduced a breaking change to ensure better compatibility of the future versions:

This package does not conform to the standard Go versioning policy; all of its interfaces may have methods added to them without a package major version bump. This non-standard API evolution could surprise an uninformed implementation author. They could unknowingly build their implementation in a way that would result in a runtime panic for their users that update to the new API.

The API is designed to help inform an instrumentation author about this non-standard API evolution. It requires them to choose a default behavior for unimplemented interface methods. There are three behavior choices they can make:

After this change, the tracing provider implemented this module will always be compatible with the SDK, even if the SDK interfaces are extended.

Please see:

• https://github.com/open-telemetry/opentelemetry-go/blob/v1.20.0/CHANGELOG.md
• https://pkg.go.dev/go.opentelemetry.io/otel/trace#hdr-API_Implementations