Prepare release 6.0.2

[mparticle-automation]

Preparing for release 6.0.2 from main.

• Bumped version to 6.0.2

[cursor]

PR Summary

Low Risk
Version and changelog-only change with no runtime or build logic modified in this diff.

Overview
Prepares 6.0.2 by bumping VERSION from 6.0.1 to 6.0.2 and adding a dated [6.0.2] - 2026-08-07 section to CHANGELOG.md.

The new changelog entry records what ships in this release: core fixes for BaseHandler.disable() no longer spinning indefinitely and avoiding empty random user identities; kit notes for Adjust coordinates, Adobemedia POM publishing, Braze 43/eCommerce plus restored Maven Central publishing for isolated kits, and Singular sample minSdk 21.

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