[Feat]: Upgrade deprecated Node version for GitHub actions

[davidjerleke]

Which variants of Embla Carousel are relevant to this feature request?

• embla-carousel (Core)
• embla-carousel-react
• embla-carousel-vue
• embla-carousel-svelte
• embla-carousel-autoplay
• embla-carousel-auto-scroll
• embla-carousel-solid
• embla-carousel-auto-height
• embla-carousel-class-names
• embla-carousel-fade
• embla-carousel-docs (Documentation)
• embla-carousel-docs (Generator)

Feature description

• Upgrade deprecated Node version for GitHub actions so it continues to work in the future.
• Don't forget to update .nvmrc too.

Additional Context

See the problem here:

PR

• [Feat]: Upgrade deprecated Node version for GitHub actions #999

Before submitting

• I've made research efforts and searched the documentation
• I've searched for existing issues
• I agree to follow this project's Contributing Guidelines for feature requests