Read archived binary plist with plutil

fastlane/Fastfile

@@ -1,3 +1,18 @@
+require "open3"
+
+def read_plist_value(path, key)
+  value, _error, status = Open3.capture3(
+    "/usr/bin/plutil",
+    "-extract",
+    key,
+    "raw",
+    path
+  )
+  UI.user_error!("Unable to read #{key} from the archived app") unless status.success?
+
+  value.strip
+end
+
 default_platform(:ios)
 
 platform :ios do
@@ -44,10 +59,10 @@ platform :ios do
       "XION.app",
       "Info.plist"
     )
-    archived_access_token = get_info_plist_value(
-      path: archived_plist,
-      key: "HomeAssistantAccessToken"
-    ).to_s
+    archived_access_token = read_plist_value(
+      archived_plist,
+      "HomeAssistantAccessToken"
+    )
     unless archived_access_token == home_assistant_access_token
       UI.user_error!("The archived app does not contain the configured Home Assistant access token")
     end