[glibmm] glib/glibmm-uninstalled.pc.in: Require sigc++-3.0

[Kjell Ahlstedt <kjellahl src gnome org>]

commit a6d6b6836db36e2e5a1e9d33b11482eb75fd9468
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Tue Mar 17 10:31:37 2020 +0100

    glib/glibmm-uninstalled.pc.in: Require sigc++-3.0

 glib/glibmm-uninstalled.pc.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/glib/glibmm-uninstalled.pc.in b/glib/glibmm-uninstalled.pc.in
index 5e700649..af8c482a 100644
--- a/glib/glibmm-uninstalled.pc.in
+++ b/glib/glibmm-uninstalled.pc.in
@@ -7,6 +7,6 @@ Name: glibmm
 Description: C++ binding for GLib, not installed
 Version: @PACKAGE_VERSION@
 URL: http://www.gtkmm.org/
-Requires: gobject-2.0 sigc++-2.0
+Requires: gobject-2.0 sigc++-3.0
 Libs: ${pc_top_builddir}/${pcfiledir}/glibmm/libglibmm-@GLIBMM_API_VERSION@.la
 Cflags: -I${pc_top_builddir}/${pcfiledir} -I${pc_top_builddir}/${pcfiledir}/@srcdir@