patch 8.2.4648: handling LSP messages is a bit slow

Problem:    Handling LSP messages is a bit slow.
Solution:   Included support for LSP messages. (Yegappan Lakshmanan,
            closes #10025)
diff --git a/src/version.c b/src/version.c
index b18de4c..15cbdf8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4648,
+/**/
     4647,
 /**/
     4646,