Source Arabic font from CDN, newer repo

[mapmeld]

As discussed in #4893, Google stopped updating our go-to fonts repo https://github.com/notofonts/noto-fonts two years ago. They now distribute multilingual Noto through individual repos, the jsdelivr CDN, and GitHub Pages.

In #5052 we added a Python script to download fonts. For now I suggest a separate list of fonts to download from the new sources (NEWER_REPO). As written this would work for most fonts, though there are exceptions (such as the UI fonts and NotoSansKayahLi) which were handled in #4893.

I'd like to update Arabic first here to fix a known issue in Kurdish map labels. I checked with a maintainer in the Noto Arabic repo, and "Arabic UI" is no longer updated; we also want to switch over to the standard font.

[imagico]

I am wondering if maintenance wise it is good to implement the path name logic (which is non-standardized and can change at any moment because someone feels the urge to scratch an itch) in script or if it is better to maintain a list of literal URLs or format strings.

This is ultimately something to decide when implementing point 3 on #5043.