brew.sh: add tap-pin to sudo check list

Library/brew.sh

@@ -146,7 +146,7 @@ fi
 if [[ "$(id -u)" = "0" && "$(/usr/bin/stat -f%u "$HOMEBREW_BREW_FILE")" != "0" ]]
 then
   case "$HOMEBREW_COMMAND" in
-    install|reinstall|postinstall|link|pin|update|upgrade|create|migrate|tap|switch)
+    install|reinstall|postinstall|link|pin|update|upgrade|create|migrate|tap|tap-pin|switch)
       odie <<EOS
 Cowardly refusing to 'sudo brew $HOMEBREW_COMMAND'
 You can use brew with sudo, but only if the brew executable is owned by root.