[gimp] desktop: give 2.10.12 release date.

[Jehan <jehanp src gnome org>]

commit fa6b57cfbd8649a2358ec7238d50057e1668b9d6
Author: Jehan <jehan girinstud io>
Date:   Tue Jun 11 17:29:03 2019 +0200

    desktop: give 2.10.12 release date.
    
    Let's make the release happen!

 desktop/org.gimp.GIMP.appdata.xml.in.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/desktop/org.gimp.GIMP.appdata.xml.in.in b/desktop/org.gimp.GIMP.appdata.xml.in.in
index ad23b17de1..62492525b6 100644
--- a/desktop/org.gimp.GIMP.appdata.xml.in.in
+++ b/desktop/org.gimp.GIMP.appdata.xml.in.in
@@ -72,8 +72,8 @@
   </provides>
 
   <releases>
-    <release version="2.10.12" date="TODO">
-      <url type="details">https://www.gimp.org/news/TODO/gimp-2-10-12-released/</url>
+    <release version="2.10.12" date="2019-06-12">
+      <url type="details">https://www.gimp.org/news/2019/06/12/gimp-2-10-12-released/</url>
       <description>
         <_p>
         GIMP 2.10.12 is a significant bug fix release, which is to be expected