[gimp-web] content: add GIMP 2.10.28 (source and Windows installer) to json file.

[Jehan <jehanp src gnome org>]

commit 0928efc0be1b2c754249f5ee402a77303e685330
Author: Jehan <jehan girinstud io>
Date:   Thu Sep 16 22:15:11 2021 +0200

    content: add GIMP 2.10.28 (source and Windows installer) to json file.

 content/gimp_versions.json | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
---
diff --git a/content/gimp_versions.json b/content/gimp_versions.json
index 28f229c1..a3a483bd 100644
--- a/content/gimp_versions.json
+++ b/content/gimp_versions.json
@@ -1,5 +1,26 @@
 {
     "STABLE":  [
+        {
+            "version": "2.10.28",
+            "date": "2021-09-14",
+            "source": [
+                {
+                    "filename": "gimp-2.10.28.tar.bz2",
+                    "sha512": 
"587f6f46741672f0700fd642a5b779694d2d8bc8ad70e7677ccdbfc2266dc62203ed347d6aaffaa4b8e7d84a84a25f7d5a51507dfd64b21b4c05970856d3ab94",
+                    "sha256": "4f4dc22cff1ab5f026feaa2ab55e05775b3a11e198186b47bdab79cbfa078826"
+                }
+            ],
+            "windows": [
+                {
+                    "date": "2021-09-16",
+                    "filename": "gimp-2.10.28-setup.exe",
+                    "sha512": 
"413669d4b466c4eccfe367258ffb5a729e4b7e72b4ed0cf60a35d98c633f4e10282d3102cbf89bfe57eb5945104c9cf716124908773375813e207282789a4dfa",
+                    "sha256": "2c2e081ce541682be1abdd8bc6df13768ad9482d68000b4a7a60c764d6cec74e",
+                    "min-support": "Windows 7",
+                    "build-id": "org.gimp.GIMP_official"
+                }
+            ]
+        },
         {
             "version": "2.10.24",
             "date": "2021-03-28",