Nim: consider bumping from 2.0.0 to 2.0.2

[ee7]

Nim 2.0.2 was released on 2023-12-19. From the blog post:

Nim 2.0.2 contains 63 commits and brings bugfixes and improvements to Nim 2.0.0, released four months ago.

However, note:

If your program uses threads (--threads:on became the default in the 2.0.x line) please also use the -d:useMalloc switch. This problem will be fixed in 2.0.4, sorry for the inconvenience.

So there may be an argument for holding off for now.