v2.1.0-beta - Talk v23.0.0-rc.2

Changes

• Built-in Talk in binaries is updated to v23.0.0-rc.2 in the beta release channel #1646
• Linux/Flatpak: Upgrade Flatpak runtime and SDK to v25.08 #1599

What's Changed

• build(flatpak): bump runtime to 25.08 by @ShGKme in #1599
• chore(release): v2.1.0-beta by @ShGKme in #1644

📥 Check for download links in https://nextcloud.com/talk-desktop-install

Full Changelog: v2.0.6...v2.1.0-beta