Update dependency gemmi to >=0.4.2, <=0.5.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gemmi	>=0.4.2, <=0.4.9 -> >=0.4.2, <=0.5.0

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[codecov-commenter]

Codecov Report

Merging #109 (011f30b) into main (4b78bee) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #109   +/-   ##
=======================================
  Coverage   98.72%   98.72%           
=======================================
  Files          41       41           
  Lines        1569     1569           
=======================================
  Hits         1549     1549           
  Misses         20       20           

Flag	Coverage Δ
unittests	98.72% <ø> (ø)

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