fix: the ISO build reads no clock of its own: file name, label and boot menu come from the release tag only (GitHub's time); without a tag: local

util-iso.sh

@@ -141,8 +141,9 @@ prepare_profile(){
     info "Profile: [%s]" "${profile}"
 
     # The release tag without its v when the release workflow builds (STEAMIFY_ISO_VERSION): the boot menu
-    # and /etc/steammachine-iso-build name the same release as the file, label and tag. By hand: the date.
-    local _iso_version="${STEAMIFY_ISO_VERSION:-$(date +%y%m%d)}"
+    # and /etc/steammachine-iso-build name the same release as the file, label and tag (no clock of its own).
+    # By hand, without a tag: local.
+    local _iso_version="${STEAMIFY_ISO_VERSION:-local}"
     change_grub_version "${_iso_version}"
 
     # Fetch up-to-date version of CachyOS repo mirrorlist