[gnome-commander/gcmd-1-10] Increase required gtk version to 2.24 (which is the last supported 2.x version)

[Uwe Scholz <uwescholz src gnome org>]

commit 397a59f6c23d1d5c12e2e77b25cfd041f165ee92
Author: Uwe Scholz <u scholz83 gmx de>
Date:   Mon May 18 23:46:41 2020 +0200

    Increase required gtk version to 2.24 (which is the last supported 2.x version)

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 7e4fbf14..c12b0c24 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,7 +36,7 @@ dnl ===================
 
 GLIB_REQ=2.44.0
 GMODULE_REQ=2.0.0
-GTK_REQ=2.18.0
+GTK_REQ=2.24.0
 GNOME_REQ=2.0.0
 GNOMEUI_REQ=2.4.0
 GNOMEVFS_REQ=2.0.0