patch 8.2.1834: PyEval_InitThreads() is deprecated in Python 3.9

Problem:    PyEval_InitThreads() is deprecated in Python 3.9.
Solution:   Do not call PyEval_InitThreads in Python 3.9 and later. (Ken
            Takata, closes #7113)  Avoid warnings for functions.
diff --git a/src/version.c b/src/version.c
index 4361345..ced1ef7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1834,
+/**/
     1833,
 /**/
     1832,