[BUG] Anti-spam throwing error

[Xarlos89]

Describe the bug

:: 06-19 17:54.24 :: ERROR :: client.py line 582 --- Ignoring exception in on_message
Traceback (most recent call last):
  File "/bot/.venv/lib/python3.12/site-packages/discord/client.py", line 508, in _run_event
    await coro(*args, **kwargs)
  File "/bot/src/bot/cogs/moderation/admin_automod_spam_messages.py", line 166, in on_message
    "file_name": message.attachments[0].filename
                 ~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range

Expected behavior

This error should not be thrown from the automod cog

To Reproduce

Spam with an attachment, I think.

How was the bot ran

Issue is in main already

Additional context

Logs from the production bot.