Revert "ispc: 1.25.3 -> 1.26.0"

This reverts commit 871cca5.

Author: alexfmpe

pkgs/development/compilers/ispc/default.nix

@@ -21,15 +21,15 @@
 
 stdenv.mkDerivation rec {
   pname = "ispc";
-  version = "1.26.0";
+  version = "1.25.3";
 
   dontFixCmake = true; # https://github.com/NixOS/nixpkgs/pull/232522#issuecomment-2133803566
 
   src = fetchFromGitHub {
     owner = pname;
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-PjETaRBrg3d86y6fguePTovq+3GaYw6eLqcY59+vIr8=";
+    sha256 = "sha256-baTJNfhOSYfJJnrutkW06AIMXpVP3eBpEes0GSI1yGY=";
   };
 
   nativeBuildInputs = [