[DsfrAccordeon] Type Button sur le bouton

[gideruette]

Sinon lorsqu'on ajoute un accordéon dans un formulaire, celui-ci se soumet au clic sur l'accordéon

[github-actions]

🎉 This issue has been resolved in version 1.0.0-beta.54 🎉

The release is available on:

• npm package (@beta dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This issue has been resolved in version 1.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀