[goocanvas] pkg-config file: Require GTK+ 4, not GTK+ 3.

[Murray Cumming <murrayc src gnome org>]

commit ace8ff4276b4193667a593aca8e8221cf5225f06
Author: Murray Cumming <murrayc murrayc com>
Date:   Sun Apr 16 14:57:43 2017 +0200

    pkg-config file: Require GTK+ 4, not GTK+ 3.
    
    configure.ac already checks for this, but the .pc file was telling
    applications to use the wrong version.

 goocanvas-3.0.pc.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/goocanvas-3.0.pc.in b/goocanvas-3.0.pc.in
index 526d766..5e42840 100644
--- a/goocanvas-3.0.pc.in
+++ b/goocanvas-3.0.pc.in
@@ -7,7 +7,7 @@ includedir=@includedir@
 Name: GooCanvas
 Description: A GTK+ canvas widget using cairo
 Version: @VERSION@
-Requires: gtk+-3.0 cairo
+Requires: gtk+-4.0 cairo
 Libs: -L${libdir} -lgoocanvas-3.0
 Cflags: -I${includedir}/goocanvas-3.0