only update attributes with dynamic dependencies

[Rich-Harris]

fixes #3526

[codecov-io]

Codecov Report

Merging #3529 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3529   +/-   ##
=======================================
  Coverage   50.25%   50.25%           
=======================================
  Files           1        1           
  Lines         197      197           
=======================================
  Hits           99       99           
  Misses         98       98

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