Update apps.json for ProSign v2.2.1

Author: github-actions[bot]

apps.json

@@ -20,6 +20,16 @@
         "https://raw.githubusercontent.com/ProStore-iOS/ProSign/refs/heads/main/gallery/Screenshot5.png"
       ],
       "versions": [
+        {
+          "version": "2.2.1",
+          "date": "2025-10-12T03:05:19+0000",
+          "localizedDescription": "What's new in Version 2.2.1?\n- Update project.yml\n- Update README.md\n- Update signerview for clarity",
+          "downloadURL": "https://github.com/ProStore-iOS/ProSign/releases/download/v2.2.1/com.prostoreios.prosign-unsigned-ios.ipa",
+          "size": 3733725,
+          "sha256": "57d659e9c564b3d40b3ab846b81bc907e42a3c76f8227aceb953bb85b447b3b4",
+          "minOSVersion": "16.0",
+          "fullDate": "20251012030519"
+        },
         {
           "version": "2.2.0",
           "date": "2025-10-12T02:07:54+0000",