Bump mrml from 3.1.5 to 4.0.0 in /native/mjml_nif

[moomerman]

Version 4.0.0 fixes a bug if you use phoenix function components
to generate MJML and have heex annotations enabled by default.

Essentially the heex annotations add comments outside the tag
and this was breaking the pareser. The bug has been fixed upstream.

See jdrouet/mrml#409 for more info.

[moomerman]

I tried to update to the latest MJML release but the tests are giving the confusing error:

error: failed to select a version for `mrml`.
    ... required by package `mjml_nif v4.0.0 (/home/runner/work/mjml_nif/mjml_nif/native/mjml_nif)`
versions that meet the requirements `^4.0.0` are: 4.0.0

It looks like it is looking for 4.0.0 and found a 4.0.0 release but couldn't use it

[Edit: I spotted that it needed to be "4.0" not "4.0.0" 🤦🏼 ]

[paulgoetze]

Thanks @moomerman for the PR, very much appretiated 🙏.

What's the reason for removing the "oderedmap" feature? I saw that it's enabled by default since mrml 2.0, but since we don't use all default features (default-features = false) I think we need to keep it in order to make sure the order of the created HTML is consistent (see #63)?

[moomerman]

I don't fully understand it, but it fails to compile with orderedmap in:

cargo build
warning: `/Users/richard/workspace/moomerman/mjml_nif/native/mjml_nif/.cargo/config` is deprecated in favor of `config.toml`
note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
error: failed to select a version for `mrml`.
    ... required by package `mjml_nif v4.0.0 (/Users/richard/workspace/moomerman/mjml_nif/native/mjml_nif)`
versions that meet the requirements `^4.0` (locked to 4.0.0) are: 4.0.0

the package `mjml_nif` depends on `mrml`, with features: `orderedmap` but `mrml` does not have these features.


failed to select a version for `mrml` which could resolve this conflict

It look like it was removed upstream.

[paulgoetze]

Ah, yes, you are right of course: mrml only uses indexmap (i.e. the former orderemap feature) from 4.0 on and I did not see it, when I first scrolled through the changelog: https://github.com/jdrouet/mrml/blob/87bec4bddcd3b9601d1f06b67e8b996512ed9e07/packages/mrml-core/CHANGELOG.md?plain=1#L38

So I'll merge your changes and prepare a new release later today. Thanks again! 💜