fix: Import version properly as string not object

[thomasrockhu]

Fixes an issue found #330 regarding version coming up as github-actions-[Object object]

[codecov]

Codecov Report

Merging #342 (5249706) into master (fbeda37) will increase coverage by 0.69%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #342      +/-   ##
==========================================
+ Coverage   96.50%   97.20%   +0.69%     
==========================================
  Files           4        4              
  Lines         143      143              
  Branches       43       43              
==========================================
+ Hits          138      139       +1     
+ Misses          5        4       -1     

Flag	Coverage Δ
demo	87.50% <ø> (ø)
script	98.42% <100.00%> (+0.78%)	⬆️

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Impacted Files	Coverage Δ
src/buildExec.ts	98.40% <100.00%> (+0.80%)	⬆️
src/version.ts	100.00% <100.00%> (ø)

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[thomasrockhu]

See https://github.com/codecov/codecov-action/pull/342/checks?check_run_id=2779500948#step:7:6 for the fix