[Perl/perl5] 77bdbf: Bump version in lib/B/Op_private.pm for 5.39.3

[Paul Evans via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 77bdbfbd05cb85348712d2588a4e5a205af7f58e
      
https://github.com/Perl/perl5/commit/77bdbfbd05cb85348712d2588a4e5a205af7f58e
  Author: Paul "LeoNerd" Evans <leon...@leonerd.org.uk>
  Date:   2023-08-21 (Mon, 21 Aug 2023)

  Changed paths:
    M lib/B/Op_private.pm

  Log Message:
  -----------
  Bump version in lib/B/Op_private.pm for 5.39.3