chore: bump version to 6.0.0 for major release (#43)

Author: mogita

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
-## [6.0.0-beta.1](https://github.com/GetStream/stream-sdk-java/compare/5.0.1...6.0.0-beta.1) (2026-02-27)
+## [6.0.0](https://github.com/GetStream/stream-sdk-java/compare/5.0.1...6.0.0) (2026-03-05)
 
 ### Breaking Changes
 

gradle.properties

@@ -1 +1 @@
-version=6.0.0-beta.1
+version=6.0.0