patch 8.2.2967: Vim9: crash when using two levels of partials

Problem:    Vim9: crash when using two levels of partials.
Solution:   Add outer_ref_T and use it in the execution context.
diff --git a/src/version.c b/src/version.c
index f57d692..77b4ed0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2967,
+/**/
     2966,
 /**/
     2965,