fix: remove duplicate shebang — src/index.ts had shebang AND bundle.mjs banner both added it

Author: chenliuyun

src/index.ts

@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 import { Command, CommanderError, InvalidArgumentError } from 'commander';
 import { createRequire } from 'node:module';
 import chalk from 'chalk';