patch 8.2.3485: Python 3 test fails with Python 3.10

Problem:    Python 3 test fails with Python 3.10.
Solution:   Adjust expected error message. (zdohnal Dohnal, closes #8969)
diff --git a/src/version.c b/src/version.c
index 62c7f8f..987f6ff 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3485,
+/**/
     3484,
 /**/
     3483,