Applications: Use new global variables at /sys/kernel/ directory

Author: https://github.com/supercomputer7
Commit: 5dfb2b18f3
Pull-request: https://github.com/SerenityOS/serenity/pull/15593
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/kleinesfilmroellchen ✅

Userland/Applications/Spreadsheet/main.cpp

@@ -44,7 +44,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         }
     }
 
-    TRY(Core::System::unveil("/proc/all", "r"));
+    TRY(Core::System::unveil("/sys/kernel/processes", "r"));
     TRY(Core::System::unveil("/tmp/session/%sid/portal/webcontent", "rw"));
     // For writing temporary files when exporting.
     TRY(Core::System::unveil("/tmp", "crw"));