[CI] Set package read permission in Linux run tests YAML (#16546)

We need this to access private Docker containers. The Linux build YAML
already has the right permissions.

Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>

Author: sarnex

.github/workflows/sycl-linux-run-tests.yml

@@ -189,6 +189,7 @@ on:
 
 permissions:
   contents: read
+  packages: read
 
 jobs:
   run: