typing: regression

[Borda]

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What does this PR do?

Fixes # (issue).

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[codecov]

Codecov Report

Merging #333 (42d0da3) into master (8412701) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #333      +/-   ##
==========================================
+ Coverage   75.88%   75.93%   +0.04%     
==========================================
  Files         111      111              
  Lines        3562     3569       +7     
==========================================
+ Hits         2703     2710       +7     
  Misses        859      859              

Flag	Coverage Δ
Linux	75.93% <100.00%> (+0.04%)	⬆️
Windows	75.93% <100.00%> (+0.04%)	⬆️
cpu	75.93% <100.00%> (+0.04%)	⬆️
macOS	75.93% <100.00%> (+0.04%)	⬆️
pytest	75.93% <100.00%> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
torchmetrics/image/psnr.py	79.16% <100.00%> (+0.90%)	⬆️
torchmetrics/image/ssim.py	100.00% <100.00%> (ø)
torchmetrics/regression/cosine_similarity.py	95.65% <100.00%> (ø)
torchmetrics/regression/explained_variance.py	94.11% <100.00%> (+1.01%)	⬆️
torchmetrics/regression/mean_absolute_error.py	94.73% <100.00%> (ø)
...trics/regression/mean_absolute_percentage_error.py	94.73% <100.00%> (ø)
torchmetrics/regression/mean_squared_error.py	95.00% <100.00%> (ø)
torchmetrics/regression/mean_squared_log_error.py	94.73% <100.00%> (ø)
torchmetrics/regression/pearson.py	95.83% <100.00%> (ø)
torchmetrics/regression/r2score.py	90.32% <100.00%> (ø)
... and 1 more

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[Borda]

the same also here, most of the mypy issues are about

error: Signature of "update" incompatible with supertype "Metric"  [override]