patch 8.2.2155: warning from Github actions for code analysis

Problem:    Warning from Github actions for code analysis.
Solution:   Remove the "git checkout HEAD^2" block.
diff --git a/src/version.c b/src/version.c
index bd2fd5d..7a76d06 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2155,
+/**/
     2154,
 /**/
     2153,