Log Message:
p5-Log-Log4perl: update to 1.51.

1.51 2020-09-05
- test improvements removing race conditions
- minimum Perl 5.6

1.50 2020-07-22
   *    (ms) Fix for slow unlinking on Windows test - thanks @zhiyuan-lin
   *    (ms) [rt.cpan.org #121346] Gabor Kanizsai reported a regression
             with empty messages logged via syswrite(). Fixed with test
             case.