[AUTOMATIC] Release/9.10.0

[RCGitBot]

This is an automatic release.

RevenueCat SDK

✨ New Features

• feat(singular): add setSingularDeviceID (feat(singular): add setSingularDeviceID #1062) via Guillem Corominas (@guillemcorominas)

🔄 Other Changes

• Test purchase forwarding and result parsing (Test purchase forwarding and result parsing #1011) via Cesar de la Vega (@vegaro)
• chore(deps): bump fastlane-plugin-revenuecat_internal from 7dd9ab9 to 6db1da0 (chore(deps): bump fastlane-plugin-revenuecat_internal from 7dd9ab9 to 6db1da0 #1065) via dependabot[bot] (@dependabot[bot])
• test: cover attribution, logging, and ad-tracking pass-through calls (test: cover attribution, logging, and ad-tracking pass-through calls #1022) via Cesar de la Vega (@vegaro)

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Note

Low Risk
Release metadata and version string updates only; no purchase or auth logic changes in the diff itself.

Overview
Automatic release that publishes 9.10.0 by bumping .version, both UPM package.json files (com.revenuecat.purchases-unity and com.revenuecat.purchases-ui-unity), and the reported plugin version on Android (PLUGIN_VERSION) and iOS (platformFlavorVersion).

CHANGELOG.md and CHANGELOG.latest.md are rewritten for this cut: they drop the prior 9.9.1 dependency-update notes from “latest” and document what ships in 9.10.0—notably SetSingularDeviceID / Singular attribution (#1062)—plus merged test and tooling work (purchase forwarding/result parsing, attribution/logging/ad-tracking pass-through tests, internal fastlane plugin bump). This PR does not add new SDK code; it only versions and documents already-merged changes.

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