"operation not permitted"

[TJ Luoma <luomat@xxxxxxxxx>]

I just did a clean install of macOS 13 (High Sierra) and have
encountered a few zsh shell scripts which say "operation not
permitted" when I try to run them

      zsh: operation not permitted: register-fluid.sh

but if I do this

     zsh =register-fluid.sh

then it works fine.

The shell script is in my $PATH and is executable. It's not doing
anything fancy. In fact I can include it here.

#!/usr/bin/env zsh -f
# Purpose:
#
# From:     Timothy J. Luoma
# Mail:     luomat at gmail dot com
# Date:     2019-09-04

NAME="$0:t:r"

if [[ -e "$HOME/.path" ]]
then
     source "$HOME/.path"
else
     PATH='/usr/local/scripts:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin'
fi

TARGET="${HOME}/Library/Application Support/Fluid/TimothyLuoma.fluid2license"

if [[ -e "$TARGET" ]]
then
     echo "$NAME: '$TARGET' already exists."
     exit 0
fi

[[ ! -d "$TARGET:h" ]] && mkdir -p "$TARGET:h"

cp -vn "$HOME/.config/licenses/fluid/TimothyLuoma.fluid2license" "$TARGET"

exit 0
#EOF

Any ideas why I'm getting "operation not permitted" for this?

Thanks!

Tj