[librsvg] Created tag 2.50.3

[Federico Mena Quintero <federico src gnome org>]

The signed tag '2.50.3' was created.

Tagger: Federico Mena Quintero <federico gnome org>
Date: 1611850235 -0600

    Tag for version 2.50.3

Changes since the last tag '2.50.2':

Christian Hergert (1):
      build: use -framework Foundation on macOS

Federico Mena Quintero (5):
      Post-release version bump to 2.50.3
      (#601) - Compute correct bounds for objects with stroke-width=0
      Update NEWS
      Cargo update
      Update NEWS

Ignacio Casal Quinteiro (1):
      configure: properly check for darwin host

Sven Neumann (1):
      Update lopdf dependency