Add screenshots

content/news/2021-briar-1.3-released.md

@@ -33,9 +33,12 @@ Work on the next big release is already underway. Among other things, Briar Proj
 
 ### Media
 {{< screenshots
-    ""
-    ""
-    ""
+    "13_settings_redesign.png"
+    "13_change_profile_pic.png"
+    "13_send_image.png"
+    "13_attach_image.png"
+    "13_disappearing_messages.png"
+    "13_sent_disappearing_message.png"
     >}}
 
 ### About Briar