[gimp] desktop: update release date.

[Jehan <jehanp src gnome org>]

commit 2c4831f90b3e4afc86aff438be2a640b9d940fa2
Author: Jehan <jehan girinstud io>
Date:   Wed Nov 7 17:01:00 2018 +0100

    desktop: update release date.
    
    Still hope for tonight! Will it happen?! :-)

 desktop/org.gimp.GIMP.appdata.xml.in.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/desktop/org.gimp.GIMP.appdata.xml.in.in b/desktop/org.gimp.GIMP.appdata.xml.in.in
index bb23556311..4e54dc1f6c 100644
--- a/desktop/org.gimp.GIMP.appdata.xml.in.in
+++ b/desktop/org.gimp.GIMP.appdata.xml.in.in
@@ -72,7 +72,7 @@
   </provides>
 
   <releases>
-    <release version="2.10.8" date="2018-09-30">
+    <release version="2.10.8" date="2018-11-07">
       <description>
         <_p>
           GIMP 2.10.8 is mostly a bug fix and optimization release. In