Prepare release 1.23.1 (open-telemetry#5226)

Prepare release 1.23.0 (open-telemetry#5199)

Prepare release 1.22.0 (open-telemetry#5093)

[release/v1.21.x] Prepare release 1.21.0 (open-telemetry#5035)

* Prepare release 1.21.0

* Fix version-dependent test

Co-authored-by: Jack Berg <jberg@newrelic.com>

Prepare release 1.20.1 (open-telemetry#4956)

Prepare release 1.20.0 (open-telemetry#4940)

Prepare release 1.19.0 (open-telemetry#4824)

Prepare release 1.18.0 (open-telemetry#4742)

Co-authored-by: opentelemetrybot <107717825+opentelemetrybot@users.noreply.github.com>

Prepare release 1.17.0 (open-telemetry#4686)

Co-authored-by: opentelemetrybot <107717825+opentelemetrybot@users.noreply.github.com>

Prepare release 1.16.0 (open-telemetry#4604)