Use julia actions cache in CI

[jishnub]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.59%. Comparing base (dbb1e50) to head (693227b).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #231      +/-   ##
==========================================
+ Coverage   88.31%   89.59%   +1.27%     
==========================================
  Files          11       11              
  Lines        1113     1115       +2     
==========================================
+ Hits          983      999      +16     
+ Misses        130      116      -14     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.