[gimp-web] content: release GIMP 2.10.28 on macOS.

[Jehan <jehanp src gnome org>]

commit 2f265e225c821754d2715fe3efe82e2149b63f8e
Author: Jehan <jehan girinstud io>
Date:   Tue Nov 16 14:27:21 2021 +0100

    content: release GIMP 2.10.28 on macOS.

 content/gimp_versions.json | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/content/gimp_versions.json b/content/gimp_versions.json
index fba46897..6920d815 100644
--- a/content/gimp_versions.json
+++ b/content/gimp_versions.json
@@ -19,6 +19,17 @@
                     "min-support": "Windows 7",
                     "build-id": "org.gimp.GIMP_official"
                 }
+            ],
+            "macos": [
+                {
+                    "date": "2021-11-16",
+                    "filename": "gimp-2.10.28-x86_64.dmg",
+                    "sha512": 
"0c94a8f79daab07603850504f9de6484f69151bfee68e3f4bdc38925c595c3561fd3c4480f566f10a7ccd743f5a92f1fe512dcd885f7de604c7f37d4f15456e0",
+                    "sha256": "8cf0db374dcaba6fb0e1184ff8c6a3c585aa1814189ed4b97ba51780469f0805",
+                    "min-support": "macOS 10.9 Mavericks",
+                    "build-id": "org.gimp.GIMP_official",
+                    "comment": "Backported fix for invisible selection (marching ants) on Big Sur (issue 
#5952)."
+                }
             ]
         },
         {