patch 9.0.1274: FIRRTL files are not recognized

Problem:    FIRRTL files are not recognized.
Solution:   Add a pattern for FIRRTL files. (Amaan Qureshi, closes #11931)
diff --git a/src/version.c b/src/version.c
index ff2105c..8facdc4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1274,
+/**/
     1273,
 /**/
     1272,