patch 9.0.1393: Cairo files are not recognized

Problem:    Cairo files are not recognized.
Solution:   Add a pattern for Cairo files. (Amaan Qureshi, closes #12118)
diff --git a/src/version.c b/src/version.c
index 9689d8b..3a2ff57 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1393,
+/**/
     1392,
 /**/
     1391,