Also pass --no-input when pip is installed in the target env

[sbidoul]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.78%. Comparing base (75813d3) to head (9197fce).
Report is 2 commits behind head on master.

Files	Patch %	Lines
src/pip_deepfreeze/sanity.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #158   +/-   ##
=======================================
  Coverage   93.78%   93.78%           
=======================================
  Files          31       31           
  Lines        1930     1931    +1     
  Branches      347      347           
=======================================
+ Hits         1810     1811    +1     
  Misses         87       87           
  Partials       33       33           

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