[gnome-terminal] build: Bump vte required version

[Christian Persch <chpe src gnome org>]

commit fbaeb201268d85f0172d3fb4d4d5859fd0177ded
Author: Christian Persch <chpe src gnome org>
Date:   Mon May 21 21:00:27 2018 +0200

    build: Bump vte required version

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index cf56669..065fe9d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -64,7 +64,7 @@ case "$with_gtk" in
        GTK_MIN_REQUIRED=3.8
        GTK_MAX_ALLOWED=3.22
        VTE_API_VERSION=2.91
-       VTE_REQUIRED=0.52.0
+       VTE_REQUIRED=0.53.1
        ;;
 esac