Adding read-only permission to all jobs in the CI flow to ensure minimum required access (#1300)

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-# Copyright (c) 2021-2023 Intel Corporation
+# Copyright (c) 2021-2024 Intel Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -25,6 +25,8 @@ on:
       - synchronize
       - reopened
 
+permissions: read-all
+
 env:
   BUILD_CONCURRENCY: 2
   MACOS_BUILD_CONCURRENCY: 3