patch 8.2.4764: CI uses an older gcc version

Problem:    CI uses an older gcc version.
Solution:   Use GCC 11. (closes #10185)
diff --git a/src/version.c b/src/version.c
index d6f2ef4..ad301a8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4764,
+/**/
     4763,
 /**/
     4762,