nodejs_21: 21.3.0 -> 21.4.0

pkgs/development/web/nodejs/update.nix

···
   hash_hex=`gpgv --keyring=$HOME/.gnupg/pubring.kbx --output - $HOME/SHASUMS256.txt.asc | grep -oP "^([0-9a-f]{64})(?=\s+node-v''${version}.tar.xz$)"`
   hash=`nix-hash --type sha256 --to-base32 ''${hash_hex}`
 
-  update-source-version nodejs-${majorVersion}_x "''${version}" "''${hash}"
+  update-source-version nodejs_${majorVersion} "''${version}" "''${hash}"
 ''

pkgs/development/web/nodejs/v21.nix

···
 in
 buildNodejs {
   inherit enableNpm;
-  version = "21.3.0";
-  sha256 = "sha256-q0Fy7IJ/dwxsO0tvMIJBBBN+2kdISOhNVe1Vs0HmdyU=";
+  version = "21.4.0";
+  sha256 = "17274m7w6wxhfwwshc0nj34682pqqkpjxgn5b1rjsq2lfr9gd03s";
   patches = [
     ./revert-arm64-pointer-auth.patch
     ./disable-darwin-v8-system-instrumentation-node19.patch