Adjust iso target location

Author: kreeuwijk

images/capi/packer/maas/maas-ubuntu-2404-arm64.json

@@ -12,7 +12,7 @@
   "http_directory": "./packer/maas/linux/ubuntu/http/24.04.arm64",
   "iso_checksum": "2ee2163c9b901ff5926400e80759088ff3b879982a3956c02100495b489fd555",
   "iso_checksum_type": "sha256",
-  "iso_target_path": "/root/.cache/packer/ubuntu-24.04.3-live-server-arm64.iso",
+  "iso_target_path": "/tmp/packer_cache/ubuntu-24.04.3-live-server-arm64.iso",
   "iso_url": "https://cdimage.ubuntu.com/releases/24.04/release/ubuntu-24.04.3-live-server-arm64.iso",
   "ubuntu_repo": "http://ports.ubuntu.com/ubuntu-ports",
   "ubuntu_security_repo": "http://ports.ubuntu.com/ubuntu-ports",