patch 9.0.0593: CI actions have too many permissions

Problem:    CI actions have too many permissions.
Solution:   Restrict permissions to what is required. (closes #11223)
diff --git a/src/version.c b/src/version.c
index ab4cea3..8f503f2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    593,
+/**/
     592,
 /**/
     591,