Log Message:
p5-PDF-API2: update to 2.038.

2.038     2020-08-31

    - Use PDF::API2::XS or Image::PNG::Libpng, if either is installed, to speed
      up inclusion of PNG files with an alpha channel by an order of magnitude
      (written by Rob Scovell, sponsored by prayerletters.com).

2.037     2020-02-05

    - Allow PDF 2.0 files to be opened.

    - [RT #131147] Ignore dictionary entries with null values (reported by Klaus
      Ethgen, fix by Vadim Repin).