chore: add joined ownership with aion-sdk on 3pi and related files (#1141)

* chore: add joined ownership with aion-sdk on 3pi and related files

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* chore: add joined ownership with aion-sdk on 3pi and related files

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
diff --git a/owlbot.py b/owlbot.py
index c245dee..dadbf4c 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -32,6 +32,7 @@
         "samples/**",
         ".github/workflows/approve-readme.yaml",
         ".github/workflows/samples.yaml",
+        ".github/CODEOWNERS",
         ".kokoro/nightly/integration.cfg",
         ".kokoro/presubmit/integration.cfg",
     ]