ci: run workflows only on pull requests

[sebastijankuzner]

Summary

Exception is deploy workflow.

Checklist

• Ready to be merged

[github-actions]

❗ This pull request has fewer than 2 commits.

You can add an empty commit with the following command:

git commit -m "Empty commit" --allow-empty
git push

Please update the PR accordingly.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.25%. Comparing base (4de3046) to head (c8d796c).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #962   +/-   ##
========================================
  Coverage    50.25%   50.25%           
========================================
  Files         1112     1112           
  Lines        60076    60076           
  Branches      1458     1458           
========================================
  Hits         30190    30190           
  Misses       29848    29848           
  Partials        38       38           

Flag	Coverage Δ
contracts	99.48% <ø> (ø)
packages	49.92% <ø> (ø)

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