fix: Use em-space and bigger bullet symbols in announcement screen

Author: PalmDevs

app/src/main/java/app/revanced/manager/ui/screen/AnnouncementScreen.kt

@@ -63,7 +63,7 @@ fun AnnouncementScreen(
                 },
                 subtitle = {
                     val createDate = announcement.createdAt.toLocalDateTime(TimeZone.UTC).relativeTime(LocalContext.current)
-                    Text("$createDate · ${announcement.author}")
+                    Text("$createDate\u2002\u2022\u2002${announcement.author}")
                 },
                 navigationIcon = {
                     TooltipIconButton(