patch 9.0.1933: Can change the type of a v: variable using if_lua

Problem:  Can change the type of a v: variable using if_lua.
Solution: Add additional handling of v: variables like :let.

closes: #13161

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
diff --git a/src/version.c b/src/version.c
index 6166111..31c1727 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1933,
+/**/
     1932,
 /**/
     1931,