patch 8.2.3374: Pyret files are not recognized

Problem:    Pyret files are not recognized.
Solution:   Recognize .arr files as Pyret. (Doug Kearns)
diff --git a/src/version.c b/src/version.c
index 9a1281f..0630ae6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3374,
+/**/
     3373,
 /**/
     3372,