stdlib: Update signature of CSV.read

[tk0miya]

• It takes an IO object as path argument
• It returns CSV::Table object when headers option given

refs:

• https://docs.ruby-lang.org/en/3.3/CSV.html#method-c-read
• https://docs.ruby-lang.org/en/3.3/CSV.html#class-CSV-label-Option+headers

[tk0miya]

Thanks!