[Perl/perl5] c4d7cf: prepare for v5.38.0-RC1

[Ricardo Signes via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: c4d7cf6ca54e055b3c7b4a1175737dd5bf0da023
      
https://github.com/Perl/perl5/commit/c4d7cf6ca54e055b3c7b4a1175737dd5bf0da023
  Author: Ricardo Signes <rjbs@semiotic.systems>
  Date:   2023-06-15 (Thu, 15 Jun 2023)

  Changed paths:
    M dist/Module-CoreList/lib/Module/CoreList.pm
    M patchlevel.h
    M pod/perlhist.pod

  Log Message:
  -----------
  prepare for v5.38.0-RC1