Update changelog for 0.12.0-2 release

debian/changelog

+phpdox (0.12.0-2) unstable; urgency=medium
+
+  * Upload to unstable in sync with php-parser
+  * Use secure URI in debian/watch.
+  * Update standards version, no changes needed.
+  * Set upstream metadata fields: Contact, Name.
+  * Compatibility with recent PHPUnit (8)
+  * Use fonts-liberation instead of embedded font
+
+ -- David Prévot <taffit@debian.org>  Fri, 09 Aug 2019 15:53:10 -1000
+
 phpdox (0.12.0-1) experimental; urgency=medium
 
   Upload to experimental during the freeze