Add CA root to Insomnia

Hello,

After running a `mkcert -install` and generating certificates with it, It works fine on Chrome & Firefox.

But, when I'm trying to send a request with [insomnia](https://insomnia.rest/), It tells me that the certificate can not be trusted.

Is there any way to specify to mkcert other "db" where the rootCA must be installed with `certutil` ?

Thanks for this great package !