Fix height of announcements not being updated when using reduced animations (#24354)

app/javascript/mastodon/features/getting_started/components/announcements.jsx

@@ -418,7 +418,7 @@ class Announcements extends ImmutablePureComponent {
         <img className='announcements__mastodon' alt='' draggable='false' src={mascot || elephantUIPlane} />
 
         <div className='announcements__container'>
-          <ReactSwipeableViews animateHeight={!reduceMotion} adjustHeight={reduceMotion} index={index} onChangeIndex={this.handleChangeIndex}>
+          <ReactSwipeableViews animateHeight animateTransitions={!reduceMotion} index={index} onChangeIndex={this.handleChangeIndex}>
             {announcements.map((announcement, idx) => (
               <Announcement
                 key={announcement.get('id')}