Revert "nixos/all-tests: skip hibernate test for now" (#340047)

Author: K900

nixos/release-combined.nix

@@ -82,9 +82,7 @@ in rec {
         (onFullSupported "nixos.tests.gitlab")
         (onFullSupported "nixos.tests.gnome")
         (onFullSupported "nixos.tests.gnome-xorg")
-        # FIXME: broken by QEMU 8.2.3 upgrade, reenable when fixed
-        # Upstream issue: https://gitlab.com/qemu-project/qemu/-/issues/2321
-        # (onSystems ["x86_64-linux"] "nixos.tests.hibernate")
+        (onSystems ["x86_64-linux"] "nixos.tests.hibernate")
         (onFullSupported "nixos.tests.i3wm")
         (onSystems ["aarch64-linux"] "nixos.tests.installer.simpleUefiSystemdBoot")
         (onSystems ["x86_64-linux"] "nixos.tests.installer.btrfsSimple")