Ensemble depwarn fixes

[codecov[bot]]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (fd5f143) 30.37% compared to head (7608e15) 30.37%.

Files	Patch %	Lines
src/ensemble/ensemble_analysis.jl	0.00%	13 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #586 +/- ## ======================================= Coverage 30.37% 30.37% ======================================= Files 53 53 Lines 4039 4039 ======================================= Hits 1227 1227 Misses 2812 2812 ```

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