configure.ac: bump to version 1.13.93 for the RC1 release
diff --git a/configure.ac b/configure.ac
index d638b07..6739742 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 
 m4_define([wayland_major_version],  [1])
 m4_define([wayland_minor_version], [13])
-m4_define([wayland_micro_version], [92])
+m4_define([wayland_micro_version], [93])
 m4_define([wayland_version],
           [wayland_major_version.wayland_minor_version.wayland_micro_version])