fix missing jquery3 adjunct with bootstrap5

[simonsymhoven]

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[codecov]

Codecov Report

Merging #64 (4e31170) into master (a0a2763) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #64   +/-   ##
=========================================
  Coverage     78.40%   78.40%           
  Complexity        9        9           
=========================================
  Files             2        2           
  Lines            88       88           
  Branches          7        7           
=========================================
  Hits             69       69           
  Misses           16       16           
  Partials          3        3           

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