Warning on running tests

[ivorynoise]

@bajpai244 we right now get the following warning when we run tests.

Can you see to it and fix it?

(node:3873) Warning: Closing file descriptor 23 on garbage collection

[wiasliaw]

@ivorynoise

It might cause by snarkjs which uses iden3/fastfile to resolve files with fs.promises.open.

• https://github.com/iden3/fastfile/blob/75de89652e480d55b5a4b9055d2cd027b2978e21/src/osfile.js#L8
• https://stackoverflow.com/questions/73181248/nodejs-closing-directory-handle-on-garbage-collection