Add a release note for the publish and schedule intents

Author: crazytonyli

RELEASE-NOTES.txt

@@ -14,6 +14,7 @@
 * [*] Share Extension: Fix a crash after uploading a post to WordPress.com [#25773]
 * [*] Add App Shortcuts for creating a post and opening Notifications, Stats, and the Reader from Siri, Spotlight, and the Shortcuts app [#25754]
 * [*] Posts and Reader posts can now be found and opened from Siri and the Shortcuts app [#25755]
+* [*] Publish or schedule a post from Siri and the Shortcuts app, with a confirmation before anything goes live [#25756]
 
 
 27.0