replace null bytes before writing them to the csv file

[jacobrobertbaca]

Description of change

replace null bytes before writing them to the csv file
https://stitchdata.atlassian.net/browse/SUP-2061

Manual QA steps

ran with this cloned connection
before change -> saw NULL bytes exception
after change -> no error

tested to make sure that we weren't incorrectly removing records that had the string '\0':

txt = 'fkld \0'
txt.replace('\0', '')
'fkld '
txt2 = '\0'
txt2.replace('\0', '')
'\0'

so if there is a string that is literally '\0' on the record, it will come through as '\0', and when we replace on the string, the '\0' does not get hit.

Risks

• low

Rollback steps

• revert this branch