[gimp-web] tools: adding UKFast which is now in the mirror rotation officially.

[Jehan <jehanp src gnome org>]

commit ccc2aa8e0bd3e617ec49bf3d800806dcabd09480
Author: Jehan <jehan girinstud io>
Date:   Tue Aug 17 15:53:54 2021 +0200

    tools: adding UKFast which is now in the mirror rotation officially.
    
    See: https://gitlab.gnome.org/Infrastructure/Infrastructure/-/issues/646

 tools/downloads/downloads.http.txt | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/tools/downloads/downloads.http.txt b/tools/downloads/downloads.http.txt
index f1d08224..c383b192 100644
--- a/tools/downloads/downloads.http.txt
+++ b/tools/downloads/downloads.http.txt
@@ -14,4 +14,5 @@ https://mirror.umd.edu/gimp/gimp/
 https://www.nic.funet.fi/pub/mirrors/ftp.gimp.org/
 https://ftp.kr.freebsd.org/pub/gimp/pub/gimp/
 https://mirrors.xmission.com/gimp/gimp/
+https://mirrors.ukfast.co.uk/sites/gimp.org/pub/gimp/
 https://download.gimp.org/pub/gimp/