new github CodeQL reports that catch makes use of a standard library function that is not thread-safe

[fgenolini]

Description
My software on Github uses Catch 2. I have just added the beta CodeQL action to my repository and a code scanning alert is listed against catch.

CodeQL rule: cpp/potentially-dangerous-function

MITRE CWE-676, reliability, security

"Call to gmtime is potentially dangerous"

Additional context
I expect my own code and all the code that I use to be free of warnings.