remove import { tmpName } from 'tmp-promise' dependency

[lukasholzer]

This dependency is not needed for creating a temp directory as node can do that:

import { tmpName } from 'tmp-promise'

const path = await tmpName({ template: 'netlify-test-socket-XXXXXX' })

can be converted to:

import { promises as fs } from 'fs'
import { tmpdir } from 'os'
import { join } from 'path'

const path = await fs.mkdtemp(join(tmpdir(), 'netlify-test-socket-'))

[tinfoil-knight]

@lukasholzer tmpName just generates a random file name using some random chars (and checks if they don't already exist) while fs.mkdtemp actually creates the directory. Should we be changing the behaviour here from just creating a valid temp dir name to actually creating the directory?

[lukasholzer]

Yea this is combined. We never just create a name without creating the dir. So we should replacing that + creating the dir with fs.mkdtemp

[muditgaur-1009]

may i work on it

[tinfoil-knight]

may i work on it

Sure. Go ahead @muditgaur-1009. Let me know if you come across any issues while setting things up.

[muditgaur-1009]

@tinfoil-knight please review i have made the changes

[danez]

As this dependency is only used in tests I would prefer to keep it. It has a bunch of convenient functions.

I noticed though that @netlify/build has it listed under dependencies, which is wrong as it is only used in tests. #5064