fix: replace colons in addition to slashes in app tmp directory (#6290)

[blakebarnett]

closes #6290

Signed-off-by: Blake Barnett blakeb@me.com

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[alexmt]

Thanks for clear and detailed explanation in #6290 .

LGTM

[codecov]

Codecov Report

Merging #6293 (53b918d) into master (0e9823e) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #6293      +/-   ##
==========================================
- Coverage   41.09%   41.07%   -0.02%     
==========================================
  Files         151      151              
  Lines       19931    19932       +1     
==========================================
- Hits         8190     8188       -2     
- Misses      10612    10614       +2     
- Partials     1129     1130       +1     

Impacted Files	Coverage Δ
util/git/client.go	44.28% <0.00%> (-0.16%)	⬇️
util/settings/settings.go	46.75% <0.00%> (-0.28%)	⬇️

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