patch 9.0.1549: USD filetype is not recognized

Problem:    USD filetype is not recognized.
Solution:   Add patterns for USD filetype. (Colin Kennedy, closes #12370)
diff --git a/src/version.c b/src/version.c
index a3c9453..857a229 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1549,
+/**/
     1548,
 /**/
     1547,