[gimp] desktop: fix release date (wrong month! Oups!).

[Jehan <jehanp src gnome org>]

commit b7a06795d6a183ab2f8126592ec41398d435534e
Author: Jehan <jehan girinstud io>
Date:   Sun Apr 25 15:46:28 2021 +0200

    desktop: fix release date (wrong month! Oups!).
    
    Also put the news date to Wednesday because it's not ready yet, and
    anyway we'll have to wait for mirrors' sync.

 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 124ed7e63c..00919d3113 100644
--- a/desktop/org.gimp.GIMP.appdata.xml.in.in
+++ b/desktop/org.gimp.GIMP.appdata.xml.in.in
@@ -73,8 +73,8 @@
   </provides>
 
   <releases>
-    <release version="2.99.6" date="2021-05-25" type="development">
-      <url type="details">https://www.gimp.org/news/2021/05/25/gimp-2-99-6-released/</url>
+    <release version="2.99.6" date="2021-04-25" type="development">
+      <url type="details">https://www.gimp.org/news/2021/04/28/gimp-2-99-6-released/</url>
       <description>
         <_p>
         For this third development release, more development effort has been shifted towards the API.