[BUG] Allow scraping of files (like PDFs) that are more than 10mb

[calebpeffer]

We just lost a customer because we weren't able to scrape a pdf on the tesla website.

For pdf files, we have a limit of 10mb (right @rafaelsideguide, you mentioned this to me via slack) regarding this discussion https://github.com/mendableai/firecrawl/discussions/51#discussioncomment-9941986

If possible, we need to get around this limit so customers aren't left in the dark as to why a particular PDF wasn't processed