Log Message:
libspectre: Update to 0.2.9

libspectre 0.2.9 (06 May 2020)
===============================

This is another bugfix only release in the libspectre's 0.2 series.

Fixed lots of crashes, memory leaks with malformed
documents (Albert Astals Cid, Randy)

Ghostscript 9.24 is now required (Christian Persch)

Hide internal symbols (Christian Persch)

Added "(libspectre)" to the error messages to be clear where the
messages come from (Caolán McNamara)

Fixed clang warnings (Albert Astals Cid)