fix: edge effect in zonalstats

[deepsource-io[bot]]

Here's the code health analysis summary for commits c01511e..65ba839. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Python	✅ Success		View Check ↗

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.43%. Comparing base (c01511e) to head (65ba839).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #935 +/- ## ========================================== + Coverage 98.41% 98.43% +0.01% ========================================== Files 79 79 Lines 9793 9790 -3 ========================================== - Hits 9638 9637 -1 + Misses 155 153 -2 ```

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