patch 8.2.3245: the crypt key may appear in a swap partition

Problem:    The crypt key may appear in a swap partition.
Solution:   When using xchaha20 use sodium_mlock(). (Christian Brabandt,
            closes #8657)
diff --git a/src/version.c b/src/version.c
index b0e67ed..6b37200 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3245,
+/**/
     3244,
 /**/
     3243,