docs: Release Announcement for PR jamulussoftware#3445 — Upgrade iOS Build to Qt6

Author: pljones

ReleaseAnnouncement.md

@@ -30,6 +30,7 @@ Here's what's new in the next release of Jamulus:
 - Linux servers now start more reliably by waiting for the network interface to be configured before launching the service. This improvement helps ensure a smoother experience for users on that platform. Thanks to [@rdica](https://github.com/rdica) for this enhancement!
 - iOS users will be pleased to know that a crash when closing the chat dialog has been fixed, ensuring a more stable experience. Thanks to [@ann0see](https://github.com/ann0see) for addressing this issue!
 - Android users will benefit from an upgraded build environment, now running on Ubuntu 22.04, which supports the latest features and improvements for the Android version of Jamulus. Thanks to [@ann0see](https://github.com/ann0see) for this upgrade!
+- iOS users can now enjoy an upgraded build to Qt6, which brings various enhancements, although some UI issues may still be present. Thanks to [@ann0see](https://github.com/ann0see) for this update!
 
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