Update Turkish chars

[tutkun]

This is updating some Turkish chars.

[sindresorhus]

Thanks for the PR.

Unfortunately, this can't be merged as-is. The main problem is that adding ö→o and ü→u to replacements.js overwrites the existing global defaults (ö→oe, ü→ue), which would be a breaking change for all users, not just Turkish.

The Turkish-specific mappings for ö and ü already work correctly via locale-replacements.js when using {locale: 'tr'}.

Most of the other additions to replacements.js are duplicates of entries that already exist in the Latin section (â, Â, î, Î, û, Û, ç, Ç, etc.), so they're no-ops.

Similarly, the additions to locale-replacements.js for chars that already have the same mapping in the defaults (ç→c, ğ→g, ı→i, ş→s) are redundant.

[tutkun]

Oh, sorry. I didn't know that. 😅