Decrease log level of no schema for table because it's very common

[abelsiqueira]

The default of read_csv_folder is require_schema = false, and for most basic use cases, we won't have a schema.
So, making the @warn a @debug makes it less verbose.

Related issues

There is no related issue.

Checklist

• I am following the contributing guidelines
• Tests are passing
• Lint workflow is passing
• Docs were updated and workflow is passing

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.60%. Comparing base (96bb385) to head (de3a9e5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #110   +/-   ##
=======================================
  Coverage   72.60%   72.60%           
=======================================
  Files           6        6           
  Lines         292      292           
=======================================
  Hits          212      212           
  Misses         80       80           

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[datejada]

LGTM