Merge pull request #562 from splitio/release-8.6.0

Update CHANGES.txt

Author: chillaq

CHANGES.txt

@@ -1,6 +1,6 @@
 CHANGES
 
-8.6.0 (Jun xx, 2025)
+8.6.0 (Jun 17, 2025)
 - Added support for rule-based segments. These segments determine membership at runtime by evaluating their configured rules against the user attributes provided to the SDK.
 - Added support for feature flag prerequisites. This allows customers to define dependency conditions between flags, which are evaluated before any allowlists or targeting rules.