Nextcloud Talk iOS 21.0.0 RC 1

What's Changed

• Feat/noid/improve context menu by @SystemKeeper in #1960
• chore: Update CDMarkdown by @SystemKeeper in #1962
• feat(call): Unify call buttons in chat view by @Ivansss in #1961
• chore: Increase PHP workers by @SystemKeeper in #1963
• fix(mediaview): Correctly wrap and center the error text by @SystemKeeper in #1964
• feat(polls): Allow editing and deleting poll drafts by @Ivansss in #1965
• chore(CI): Updating pr-feedback.yml workflow from template by @nextcloud-command in #1969
• feat(meetings): Show upcoming events 📆 by @Ivansss in #1968
• Nextcloud Talk iOS 21.0.0 RC 1 by @Ivansss in #1974

Full Changelog: v21.0.0beta1...v21.0.0rc1