Create release_tracking workflow for tracking releases

[jonrohan]

Part of https://github.com/github/primer/issues/3181

This Pull creates a release_tracking workflow that will track when releases are created and published. These will be tracked on the Deployments dashboard https://app.datadoghq.com/dashboard/ckz-5jr-6f4/primer-deployments

[changeset-bot[bot]]

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Latest commit: e7c7ceb63614fff0fedafb3ca014fedb4bd49754

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