chore(main): release telemetry 0.2.1

[github-actions[bot]]

:robot: I have created a release beep boop

0.2.1 (2024-04-23)

Bug Fixes

• telemetry activity source should use its own version (#207) (82dd679)

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[github-actions[bot]]

:robot: Release is at https://github.com/launchdarkly/dotnet-server-sdk/releases/tag/telemetry-0.2.1 :sunflower: