fix: ensure we use Apple builtin nc, rather than GNU

fig.fish

@@ -35,7 +35,7 @@ if [ -d /Applications/fig.app -o -d ~/Applications/fig.app ] && command -v fig 1
     if [ -z "$FIG_SHELL_VAR" ]
 
         function fig_keybuffer --on-signal SIGUSR1
-            echo fig bg:fish-keybuffer $TERM_SESSION_ID $FIG_INTEGRATION_VERSION 0 (commandline -C) \"(commandline)\" | base64 | nc -U /tmp/fig.socket
+            echo fig bg:fish-keybuffer $TERM_SESSION_ID $FIG_INTEGRATION_VERSION 0 (commandline -C) \"(commandline)\" | base64 | /usr/bin/nc -U /tmp/fig.socket
         end
 
         function fig_precmd --on-event fish_prompt

zle.zsh

@@ -29,7 +29,7 @@ function fig_zsh_redraw() {
     fi
 
 
-    ( echo fig bg:zsh-keybuffer $TERM_SESSION_ID $FIG_INTEGRATION_VERSION $HISTNO $CURSOR \""$BUFFER"\" | base64 | nc -U /tmp/fig.socket &)
+    ( echo fig bg:zsh-keybuffer $TERM_SESSION_ID $FIG_INTEGRATION_VERSION $HISTNO $CURSOR \""$BUFFER"\" | base64 | /usr/bin/nc -U /tmp/fig.socket &)
 }
 
 function fig_hide() {