fix: make download key optional

[anand2312]

Make "download" key optional for create_signed_url; without this passing {} as the options argument would make the static type-checker complain

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (bf49d51) 84.70% compared to head (fc93662) 84.70%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #153   +/-   ##
=======================================
  Coverage   84.70%   84.70%           
=======================================
  Files          12       12           
  Lines         451      451           
=======================================
  Hits          382      382           
  Misses         69       69           

Files	Coverage Δ
storage3/types.py	95.91% <100.00%> (ø)
storage3/_async/file_api.py	83.20% <0.00%> (ø)
storage3/_sync/file_api.py	83.20% <0.00%> (ø)

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[silentworks]

Doesn't this require the sync client to be updated too? or is this done automatically by the CI pipeline?

[anand2312]

@silentworks good catch, i forgot to run unasync because i initially only planned on changing types.py. we could possibly run unasync in the CI too.