nixVersions.nix_2_24: Fix FOD hash for 2.24.15 (#423312)

pkgs/tools/package-management/nix/default.nix

···
 
       nix_2_24 = commonAutoconf {
         version = "2.24.15";
-        hash = "sha256-SthMCsj6POjawLnJq9+lj/UzObX9skaeN1UGmMZiwTY=";
+        hash = "sha256-GHqFHLxvRID2IEPUwIfRMp8epYQMFcvG9ogLzfWRbPc=";
         self_attribute_name = "nix_2_24";
       };