…etrics per version

Added variation version to SDK variation payload to track variation
metrics per version

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guidelines](../blob/main/CONTRIBUTING.md#submitting-pull-requests)
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🤖 I have created a release *beep* *boop*
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##
[0.8.0](0.7.0...0.8.0)
(2025-02-07)


### Features

* Add variation version to metric data
([#39](#39))
([1b07d08](1b07d08))

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