patch 9.0.1430: Livebook files are not recognized

Problem:    Livebook files are not recognized.
Solution:   Add a pattern for Livebook files. (Mathias Jean Johansen,
            closes #12203)
diff --git a/src/version.c b/src/version.c
index 23e69b3..ee7b363 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1430,
+/**/
     1429,
 /**/
     1428,