[libsecret] Bump version number

[Daiki Ueno <dueno src gnome org>]

commit b01e54991a7f067e24a4f309690ea2c9233d1a35
Author: Daiki Ueno <dueno src gnome org>
Date:   Thu Mar 29 10:59:16 2018 +0200

    Bump version number

 NEWS         |   10 ++++++++++
 configure.ac |    2 +-
 2 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 401ca58..2982c7c 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,13 @@
+0.18.6
+ * Fix shared key derivation between libsecret and gnome-keyring [#778357]
+ * Avoid run-time error when gnome-keyring is not responding [#787391]
+ * Enable cross compilation [#748111]
+ * Port build scripts to Python 3 [#687637]
+ * Build and test fixes [#767002, #777826, #734630, #768112]
+ * GI annotation fixes [#785034]
+ * Fix textual typos [#782206, ...]
+ * Updated translations
+
 0.18.5
  * Build fixes
  * Port tests to Python 3 [#761834]
diff --git a/configure.ac b/configure.ac
index 243abb6..e527ed4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 AC_PREREQ(2.63)
 
-AC_INIT([libsecret],[0.18.5],
+AC_INIT([libsecret],[0.18.6],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=libsecret],
         [libsecret])