ci: use --ignore-scripts wherever possible

[pichlermarc]

Which problem is this PR solving?

Similar to the PR in the contrib repo. We can use --ignore-scripts wherever possible to avoid postinstall scripts from running in CI that are not strictly needed.

Ref: open-telemetry/opentelemetry-js-contrib#3121

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.17%. Comparing base (a594098) to head (e1f6aa8).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5971   +/-   ##
=======================================
  Coverage   95.17%   95.17%           
=======================================
  Files         316      316           
  Lines        8521     8521           
  Branches     1763     1763           
=======================================
  Hits         8110     8110           
  Misses        411      411           

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[maryliag]

how is this being tested? just wondering, so it doesn't have the same issue on the other repo where you had to revert one of the changes

[pichlermarc]

@maryliag - in the other repo not all tests actually run on the PR, only affected packages. Since the .github directory does not affect the build, we missed the failure.

Here, we always run all tests on PRs - so there's no guesswork. 🙂

[pichlermarc]

no guesswork

for the most part anyway. There are still some workflows that only run on main or on publish. For the most part though, we only need it for a following compile step, which we already know from tests will work 🙂

Anyway - I'm on standby for any problems that arise from this change and will fix it ASAP.

[maryliag]

Got it! in that case, I'll approve and let's keep an eye on it