Fix a weird bug when removing directories

[DilumAluthge]

No description provided.

[codecov]

Codecov Report

Merging #45 (a287861) into master (753b7f5) will increase coverage by 0.10%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #45      +/-   ##
==========================================
+ Coverage   92.66%   92.77%   +0.10%     
==========================================
  Files           9        9              
  Lines         341      346       +5     
==========================================
+ Hits          316      321       +5     
  Misses         25       25              

Impacted Files	Coverage Δ
src/bump-stdlibs.jl	96.15% <100.00%> (+0.12%)	⬆️

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