Merge pull request #533 from nix-community/nixos-25.05

Update kexec to Nixos 25.05

Author: Mic92

src/nixos-anywhere.sh

@@ -610,7 +610,7 @@ runKexec() {
   if [[ $kexecUrl == "" ]]; then
     case "${isArch}" in
     x86_64 | aarch64)
-      kexecUrl="https://github.com/nix-community/nixos-images/releases/download/nixos-24.11/nixos-kexec-installer-noninteractive-${isArch}-linux.tar.gz"
+      kexecUrl="https://github.com/nix-community/nixos-images/releases/download/nixos-25.05/nixos-kexec-installer-noninteractive-${isArch}-linux.tar.gz"
       ;;
     *)
       abort "Unsupported architecture: ${isArch}. Our default kexec images only support x86_64 and aarch64 cpus. Checkout https://github.com/nix-community/nixos-anywhere/#using-your-own-kexec-image for more information."