Update signed manifest to 7.28.3

manifest.json

@@ -1,11 +1,11 @@
 {
-    "version": "7.23.50",
-    "released_at": "2026-08-13T11:00:48+00:00",
-    "package_url": "https://git-cloud.weboria.eu/Weboria/argus-wp-defence/releases/download/v7.23.50/argus-wordpress-defence-7.23.50.zip",
-    "sha256": "f79cdefe03d7e51da65477d1bdce7a55d97b9db73f8880055ff4e6a956147622",
+    "version": "7.28.3",
+    "released_at": "2026-08-26T09:17:12+00:00",
+    "package_url": "https://git-cloud.weboria.eu/Weboria/argus-wp-defence/releases/download/v7.28.3/argus-wordpress-defence-7.28.3.zip",
+    "sha256": "31aadccb8d21e69de528dd613e350ec749352edcf7bd4ebbf8e3d7bd2a8c9ee5",
     "min_php": "7.4",
     "min_wp": "6.0",
     "critical": false,
-    "summary": "* Fixed the Settings page sometimes showing an old \"Last Failed Update\" message even after a later\n  update had already succeeded.",
-    "signature": "yR4LsWfzbqvw5NE6cDtKXdmAtt5qeDcSmfZhY0cPwFdpWfFHFpJpxvDpybY0RxMN9AEnc+sQclM52Nykbj19DA=="
+    "summary": "* Fixed \"Run a scan now\" occasionally not returning to the Scanner page after starting a scan.\n* Scan errors (for example, a scan already in progress) are now shown clearly instead of the\n  button silently doing nothing.\n* Improved the reliability of scheduled protection tasks (scans, threat intelligence updates,\n  and firewall enforcement) so they keep running even in unusual hosting situations.",
+    "signature": "7QJWy1HleCIno5q5rG3WtkLfJqxmMdZfwJR9l326emfNAmbpOcaB2WJk9+o/OWuNXEcuHNOHkIFNaCwo9K1YCQ=="
 }