patch 8.2.4729: HEEx and Surface templates do not need a separate filetype

Problem:    HEEx and Surface templates do not need a separate filetype.
Solution:   Use Eelixir for the similar filetypes. (Aaron Tinio, closes #10124)
diff --git a/src/version.c b/src/version.c
index 9657184..5bffc85 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4729,
+/**/
     4728,
 /**/
     4727,