Make coderabbit config optional (#1680)

<!--
Ensure the title clearly reflects what was changed.
Provide a clear and concise description of the changes made. The PR
should only contain the changes related to the issue, and no other
unrelated changes.
-->

Fixes OPS-3140

Author: alexandrudanpop

.coderabbit.yaml

@@ -0,0 +1,3 @@
+reviews:
+  auto_review:
+    enabled: false