Is not parsing properly the Last-Modified header value when is a Monday

Hi,

Just in case, in the previous version we were able to parse the following 'Mon, 05 Dec 2022 19:43:03 GMT' without any problem and now is returning None.

This is happening only when is Monday.

It could be related to this commit: https://github.com/scrapinghub/dateparser/commit/89a5b29517a358e2784cc818687b7b6bed343159 ?


Thank you!

Best,
Nicolas.
