Bump mrml from 3.0.4 to 3.1.1 in /native/mjml_nif

[dependabot[bot]]

Bumps mrml from 3.0.4 to 3.1.1.

Release notes

Sourced from mrml's releases.

mrml-v3.1.1

Other

• add python usage
• update readme and documentation
• (mrml-core) move everythin in Arc (#392)
• (mrml-core) keep public build_attributes_all
• (mrml-core) make sure mj-head children are considered in order (#390)
• make sure chaining include and mj-attributes are taken in order (#389)

mrml-v3.1.0

Added

• make sure mj-style content is trimed

Fixed

• (mrml-core) make sure mj-include type css are used

Commits

• 6d027c8 chore: release (#393)
• 9811d38 doc: add python usage
• 5bed074 doc: update readme and documentation
• 68d5930 build: update release-plz and cliff configs
• 282eb24 refactor(mrml-core): move everythin in Arc (#392)
• e09c353 refactor(mrml-core): keep public build_attributes_all
• 4272c41 refactor(mrml-core): make sure mj-head children are considered in order (#390)
• 62a11f0 test: make sure chaining include and mj-attributes are taken in order (#389)
• dc61b09 chore: release (#387)
• ae47900 feat: make sure mj-style content is trimed
• Additional commits viewable in compare view

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[dependabot[bot]]

Superseded by #137.