patch 8.2.3785: running CI on MacOS with gcc is not useful

Problem:    Running CI on MacOS with gcc is not useful.
Solution:   Only use clang. (Ozaki Kiichi, closes #9326)  Also build with
            normal features.
diff --git a/src/version.c b/src/version.c
index ed491a8..3ac3177 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3785,
+/**/
     3784,
 /**/
     3783,