[gnome-photos/gnome-3-38] appdata: Add release notes for 3.38.0

[Debarshi Ray <debarshir src gnome org>]

commit d04c975b317a6c2a3e3409ef23de599fb9232413
Author: Debarshi Ray <debarshir gnome org>
Date:   Wed Sep 23 17:52:34 2020 +0200

    appdata: Add release notes for 3.38.0
    
    https://gitlab.gnome.org/GNOME/gnome-photos/-/merge_requests/152

 data/org.gnome.Photos.appdata.xml.in | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/data/org.gnome.Photos.appdata.xml.in b/data/org.gnome.Photos.appdata.xml.in
index db7a4f51..914e73bc 100644
--- a/data/org.gnome.Photos.appdata.xml.in
+++ b/data/org.gnome.Photos.appdata.xml.in
@@ -34,6 +34,14 @@
     <kudo>UserDocs</kudo>
   </kudos>
   <releases>
+    <release version="3.38.0" date="2020-09-23">
+      <description>
+        <ul>
+          <li>Add a new magic filter, Trencin, very similar to Instagram's Clarendon filter</li>
+          <li>Switch to private instances of the Tracker 2.x daemons</li>
+        </ul>
+      </description>
+    </release>
     <release version="3.34.0" date="2019-09-11">
       <description>
         <ul>