[#1872] Update Node version to 18

[sopa301]

Fixes #1872

Proposed commit message

Node.js 16 has reached its end-of-life on 11 September 2023.

Let us update Node.js to use Node 18 in the GitHub workflows.

Other information

The update involved removing the depreciated node-sass.

[sopa301]

Closed because I don't have the required competencies (as of now) to properly fix the issue. Here are some things I learned in the process.

• Updating Node to 18 requires node-sass to be updated to at least 8.0
• However, node-sass has been depreciated in favor of dart-sass (sass), which is already used in the project.
• Additionally, node-sass on windows has a few more requirements that make it harder to set up.
• Therefore, it would be easier to remove node-sass and use sass exclusively.
• Attempting to do so resulted in a bug similar to GitHub Actions: Cypress tests are failing #1784

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[ckcherry23]

Thanks @sopa301 for your detailed investigation regarding the issue and reporting it here!
We can figure out a fix for this in a future PR.

[sopa301]

It's interesting to note #2102 somehow fixed the bug mentioned above.

[ckcherry23]

LGTM!

[vvidday]

Thanks for your work on this @sopa301, can you look into resolving the merge conflict?

[sopa301]

@vvidday Updated!

[vvidday]

@vvidday Updated!

thanks! :)

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