Update libgda URL

Author: ryonakano

build-aux/com.github.alecaddd.sequeler.json

@@ -50,8 +50,8 @@
       },
       "sources": [{
         "type": "archive",
-        "url": "https://download-fallback.gnome.org/sources/libgda/5.2/libgda-5.2.9.tar.xz",
-        "sha256": "59caed8ca72b1ac6437c9844f0677f8a296d52cfd1c0049116026abfb1d87d9b"
+        "url": "https://gitlab.gnome.org/GNOME/libgda/-/archive/LIBGDA_5_2_9/libgda-LIBGDA_5_2_9.tar.gz",
+        "sha256": "add71e7a3c61cc2d27805c3f7392ed62dfe301365aaff2a7efa72808c038948b"
       }],
       "modules": [{
           "name": "postgresql-libs",