[poppler] Poppler 21.06.1 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-21.06.1.tar.xz

The tarball is signed at http://poppler.freedesktop.org/poppler-21.06.1.tar.xz.sig with my key
http://hkps.pool.sks-keyservers.net/pks/lookup?op=get&search=0xCA262C6C83DE4D2FB28A332A3A6A4DB839EAA6D7

Release 21.06.1
glib:
 * fix poppler_rectangle_free() regression. Issue #1087

This release was brought to you by Nelson Benítez León and everyone else that filed bugs or helped with code reviews :)

Testing, patches and bug reports welcome.

Cheers,
  Albert