Backport make sure that migrations use correct dtypes

[yngve-sk]

backport of #9394

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.82%. Comparing base (8a5567d) to head (659abb9).

Additional details and impacted files

@@               Coverage Diff                @@
##           version-11.1    #9399      +/-   ##
================================================
- Coverage         90.84%   90.82%   -0.02%     
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  Files               352      352              
  Lines             21961    21957       -4     
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- Hits              19951    19943       -8     
- Misses             2010     2014       +4     

Flag	Coverage Δ
cli-tests	39.22% <0.00%> (+0.01%)	⬆️
gui-tests	71.82% <0.00%> (-0.02%)	⬇️
performance-tests	49.35% <0.00%> (+<0.01%)	⬆️
unit-tests	79.66% <100.00%> (-0.04%)	⬇️

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