Extract function from runScalafixMigrations

[fthomas]

No description provided.

[codecov]

Codecov Report

Merging #1953 (48d0e45) into master (f28737d) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1953      +/-   ##
==========================================
- Coverage   78.35%   78.32%   -0.04%     
==========================================
  Files         129      129              
  Lines        2227     2228       +1     
  Branches       60       58       -2     
==========================================
  Hits         1745     1745              
- Misses        482      483       +1     

Impacted Files	Coverage Δ
...ain/scala/org/scalasteward/core/edit/EditAlg.scala	57.14% <0.00%> (ø)
...main/scala/org/scalasteward/core/util/logger.scala	90.90% <0.00%> (-9.10%)	⬇️

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