patch 8.2.0312: Vim9: insufficient script tests

Problem:    Vim9: insufficient script tests.
Solution:   Add more tests.  Make "import * as Name" work.
diff --git a/src/version.c b/src/version.c
index ab8cb0e..05c0edc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    312,
+/**/
     311,
 /**/
     310,