chore(version): Update package versions [skip ci]

platform/ui-next/CHANGELOG.md

@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+# [3.12.0-beta.21](https://github.com/OHIF/Viewers/compare/v3.12.0-beta.20...v3.12.0-beta.21) (2025-08-29)
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+**Note:** Version bump only for package @ohif/ui-next
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 # [3.12.0-beta.20](https://github.com/OHIF/Viewers/compare/v3.12.0-beta.19...v3.12.0-beta.20) (2025-08-28)
 
 **Note:** Version bump only for package @ohif/ui-next