fix: ignore NA when casting to datetime

[aquemy]

No description provided.

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (8e6cff4) 89.88% compared to head (f946964) 89.88%.

❗ Current head f946964 differs from pull request most recent head bb8e6fd. Consider uploading reports for the commit bb8e6fd to get more accurate results

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Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1391   +/-   ##
========================================
  Coverage    89.88%   89.88%           
========================================
  Files          192      192           
  Lines         6147     6147           
========================================
  Hits          5525     5525           
  Misses         622      622           

Flag	Coverage Δ
py3.8-ubuntu-22.04-pandas	89.88% <0.00%> (ø)

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Impacted Files	Coverage Δ
src/ydata_profiling/model/typeset_relations.py	87.77% <0.00%> (ø)

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