[Backport] feat: bump the agent version to 13.0.3 (#456)

Co-authored-by: Adam Roberts <[email protected]>

Author: github-actions[bot]

roles/agent_install/defaults/main.yml

@@ -37,7 +37,7 @@ configuration:
       location: null
       install_build_dependencies: false
     override: null
-    version: 13.0.2
+    version: 13.0.3
   repository:
     deb:
       url: null