patch 9.0.1256: NetworkManager connection files are not recognized

Problem:    NetworkManager connection files are not recognized.
Solution:   Add a pattern for NetworkManager connection files. (closes #11893)
diff --git a/src/version.c b/src/version.c
index b99641f..eb317fb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1256,
+/**/
     1255,
 /**/
     1254,