patch 8.2.0302: setting 'term' may cause error in TermChanged autocommand

Problem:    Setting 'term' may cause error in TermChanged autocommand.
Solution:   Use aucmd_prepbuf() to switch to the buffer where the autocommand
            is to be executed. (closes #5682)
diff --git a/src/version.c b/src/version.c
index cda4a81..96ef2c1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    302,
+/**/
     301,
 /**/
     300,