Update to Unicode 15.1.0 [BZ #30854]

Unicode 15.1.0 Support: Character encoding, character type info, and
transliteration tables are all updated to Unicode 15.1.0, using
the generator scripts contributed by Mike FABIAN (Red Hat).

    Total removed characters in newly generated CHARMAP: 0
    Total changed characters in newly generated CHARMAP: 0
    Total added characters in newly generated CHARMAP: 627
    Total removed characters in newly generated WIDTH: 0
    Total changed characters in newly generated WIDTH: 0
    Total added characters in newly generated WIDTH: 627

    alpha: Added 622 characters in new ctype which were not in old ctype
    graph: Added 627 characters in new ctype which were not in old ctype
    print: Added 627 characters in new ctype which were not in old ctype
    punct: Added 5 characters in new ctype which were not in old ctype
        The five characters added to punct are:
        2FFC;IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM RIGHT;So;0;ON;;;;;N;;;;;
        2FFD;IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM LOWER RIGHT;So;0;ON;;;;;N;;;;;
        2FFE;IDEOGRAPHIC DESCRIPTION CHARACTER HORIZONTAL REFLECTION;So;0;ON;;;;;N;;;;;
        2FFF;IDEOGRAPHIC DESCRIPTION CHARACTER ROTATION;So;0;ON;;;;;N;;;;;
        31EF;IDEOGRAPHIC DESCRIPTION CHARACTER SUBTRACTION;So;0;ON;;;;;N;;;;;

    The Unicode announcement blog entry says "[...] adds 627
    characters, [...] additions include 622 CJK unified ideographs in
    a new block, [...]", so that looks OK. The Unicode
    blog mentions "six completely new emoji" but they don't appear here as
    they are all sequences and not single code points.

Resolves: BZ #30854

Reviewed-by: Carlos O'Donell <carlos@redhat.com>