Update dependency biojppm/c4core to v0.3.0

[dashql-renovate]

This PR contains the following updates:

Package	Update	Change
biojppm/c4core	minor	0.2.12 → 0.3.0

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Release Notes

biojppm/c4core (biojppm/c4core)

v0.3.0: Release 0.3.0

Compare Source

• PR#162:
  • charconv.hpp:
    • add implementation of to_chars() for raw char pointers
    • improve from_chars() for bool
    • minor simplification of atoi_first() and atou_first()
  • format.hpp:
    • simplify boolalpha() implementation
    • catrs()/catseprs()/formatrs(): resize to capacity before trying
    • fix uncatsep(): force sep as a csubstr, and enforce it
    • cat()/catsep()/format(): add tests to ensure repeated args
    • improve implementation of fmt::left()/fmt::right(). add fmt::center()
  • Improve doxygen comments
• PR#163:
  • to_chars():
    • ensure char*/const char* (using strlen) overloads accept null pointer
    • add implementation for nullptr_t
• PR#164:
  • Move aalloc() et al to new hdr/src c4/alloc.hpp
  • Fix shared library exports, which were causing a link error in lld-link on Windows (see rapidyaml#600).
• PR#165: c4/std/span.hpp missing from amalgamate.py.

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