un-silenced windows build

[chfw]

fix #244

before:

after:

[codecov-io]

Codecov Report

Merging #251 into dev will decrease coverage by 0.81%.
The diff coverage is 60.71%.

@@            Coverage Diff             @@
##              dev     #251      +/-   ##
==========================================
- Coverage   99.14%   98.33%   -0.82%     
==========================================
  Files          57       59       +2     
  Lines        2469     2519      +50     
==========================================
+ Hits         2448     2477      +29     
- Misses         21       42      +21

Impacted Files	Coverage Δ
tests/mobanfile/test_templates.py	100% <ø> (ø)	⬆️
moban/mobanfile/templates.py	100% <100%> (ø)	⬆️
moban/plugins/template.py	97.81% <100%> (+0.01%)	⬆️
tests/test_copy_engine.py	100% <100%> (ø)	⬆️
moban/utils.py	97.64% <50%> (ø)	⬆️
tests/test_regression_pack.py	52.63% <52.63%> (ø)
moban/jinja2/tests/win32.py	66.66% <66.66%> (ø)
tests/test_hash_store.py	98.88% <75%> (-1.12%)	⬇️
moban/jinja2/tests/files.py	85.71% <80%> (-14.29%)	⬇️
... and 1 more

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