chore: Update coderabbitai configuration to not expect docstrings in test (#1355)

#1352 (comment)

## Summary by Sourcery

Build:
- Update CodeRabbit configuration to exempt Python test files from
requiring docstrings.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* Updated code review configuration to clarify that docstrings are not
required for test functions in test files.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: Czaki

.coderabbit.yaml

@@ -3,3 +3,7 @@ reviews:
     github-checks:
       enabled: true
       timeout_ms: 900000  # 15 minutes (maximum allowed)
+
+  path_instructions:
+    - path: "package/tests/**/*.py"
+      instructions: "Docstrings are not required for test functions in test files."