fix(gatsby): fix --https option for develop

[pieh]

Description

#35675 broke https option, this change restores it

Related Issues

Fixes #36241

[pieh]

we are passing ICert Object to child process, so this has to be serializable. Buffer can be serialized but but this was fastest way to fix as Strings are also supported.

Without this I was getting:

The "options.cert" property must be of type string or an instance of Buffer, TypedArray, or DataView. Received an instance of Object

[badaczewski]

Any idea when this will get a release? This is broken in 4.19.0, 4.19.1 and 4.19.2.

[jjang16]

This issue is pretty urgent. Build is broken from 4.18 and below, and Dev is broken 4.19

[christopherrobinson]

Can we get a release with this fix in? Currently hacking this in locally with patch-package

[LekoArts]

A minor release goes out every two weeks, so the next one is tomorrow.

[pieh]

This was released in gatsby@next, so you can use that temporarily (it will be released in gatsby@latest stable tomorrow)