ci: use script outputs

[Borda]

Before submitting

• Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
• Did you make sure to update the docs?
• Did you write any new necessary tests?

What does this PR do?

for generating bash script define the output file so eventual errors are not hidden in the generated scripts

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

Did you have fun?

Make sure you had fun coding 🙃

[codecov]

Codecov Report

Merging #157 (6024db4) into main (c257c46) will decrease coverage by 0%.
The diff coverage is 83%.

@@         Coverage Diff         @@
##           main   #157   +/-   ##
===================================
- Coverage    75%    75%   -0%     
===================================
  Files         2      2           
  Lines       355    363    +8     
===================================
+ Hits        267    273    +6     
- Misses       88     90    +2