[pygi] Update PyGObject dependency to 2.21.1

[Tomeu Vizoso <tomeuv src gnome org>]

commit ec598128de9e90dccab662ed2f5511c8d659e156
Author: Tomeu Vizoso <tomeu vizoso collabora co uk>
Date:   Tue Jun 8 15:48:33 2010 +0200

    Update PyGObject dependency to 2.21.1

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 24d3e63..30c765b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,7 +40,7 @@ PKG_CHECK_MODULES(FFI, libffi >= 3.0)
 PKG_CHECK_MODULES(GNOME,
 	glib-2.0 >= 2.22.4
 	gobject-introspection-1.0 >= 0.6.14
-	pygobject-2.0 >= 2.20
+	pygobject-2.0 >= 2.21.1
 	pycairo >= 1.0.2
 )