Update signed manifest to 7.28.3

manifest.json

@@ -1,11 +1,11 @@
 {
-    "version": "7.28.1",
-    "released_at": "2026-08-16T07:25:21+00:00",
-    "package_url": "https://git-cloud.weboria.eu/Weboria/argus-wp-defence/releases/download/v7.28.1/argus-wordpress-defence-7.28.1.zip",
-    "sha256": "88a0cca8bd117a39a12f0e3bec7900691b2eadab6fc51e8c4d02592ae4f0dd00",
+    "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": "* MFA is now a full Authentication & Access Security Center: see your account's protection status\n  at a glance, with clearer policy and enrollment options.\n* Settings has been split into focused sections (Overview, Protection, Automatic Updates, Access\n  Control, Network & GeoIP) instead of one long page.\n* Fixed a validation gap on the IP Whitelist field.",
-    "signature": "pF1HC3WkxP/cVo/Gk2R/QSOO87z6LHgGAIj3pLNQvvxl50DOSeYnNLc+3L1YJPjyh/XkjP2pxPA0QJ9l6xDfAQ=="
+    "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=="
 }