Change node version used in CI from 16 to 18

[bidoubiwa]

Most CI jobs are ran with node 16. These should be updated to node 18.

Example:

https://github.com/meilisearch/instant-meilisearch/blob/bd6ec70211f7a86319a2276cb2abdf89b559ce51/.github/workflows/pre-release-tests.yml#L46-L49

[tungbq]

Created a PR #1122 for this task