Make the schemas.hpp generated file #include array

The script missed a #include.  Add it.

Tested: Code compiles.  Header change only.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Ib38a46d8e97e4aadb596b4ff68795cea06e62fde
diff --git a/scripts/update_schemas.py b/scripts/update_schemas.py
index 626c0d1..1c88817 100755
--- a/scripts/update_schemas.py
+++ b/scripts/update_schemas.py
@@ -379,6 +379,7 @@
         "#pragma once\n"
         "{WARNING}\n"
         "// clang-format off\n"
+        "#include <array>\n"
         "\n"
         "namespace redfish\n"
         "{{\n"