strftime utf decode bug

On tr_TR locale this function raises error:


**strftime utf decode bug**

Impacted versions:

 - 8.0 and above

Steps to reproduce:

 1. change locale to tr_TR (Turkish)
 2. click on Sales Teams

Current behavior:

Raises this error:
UnicodeDecodeError: 'utf8' codec can't decode byte 0xf0 in position 1: invalid continuation byte

Expected behavior:

Decode months correctly