[seahorse-sharing] Accept GnuPG 2.2.x as supported version

[Antoine Jacoutot <ajacoutot src gnome org>]

commit 0370fb321032a7d830f523f9c508d10addf01cd5
Author: Antoine Jacoutot <ajacoutot gnome org>
Date:   Fri Nov 10 09:03:47 2017 +0100

    Accept GnuPG 2.2.x as supported version
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790153

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5e26c8f..2dd01b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,7 +43,7 @@ AC_ARG_ENABLE(gpg-check,
        DO_CHECK=$enableval, DO_CHECK=yes)
 
 if test        "$DO_CHECK" = "yes"; then
-       accepted_versions="1.2 1.4 2.0 2.1"
+       accepted_versions="1.2 1.4 2.0 2.1 2.2"
        AC_PATH_PROGS(GNUPG, [gpg gpg2], no)
        ok="no"
        if test "$GNUPG" != "no"; then