[Perl/perl5] dc304b: INSTALL: tweak the version in the bincompat language

[Ricardo Signes via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: dc304b6334abdc961662ba62152f0abb11ae9b1e
      
https://github.com/Perl/perl5/commit/dc304b6334abdc961662ba62152f0abb11ae9b1e
  Author: Ricardo Signes <rjbs@semiotic.systems>
  Date:   2022-05-27 (Fri, 27 May 2022)

  Changed paths:
    M INSTALL

  Log Message:
  -----------
  INSTALL: tweak the version in the bincompat language

This bit of text gets in my often enough to annoy me, but not
often enough for me to figure out what to do better!