DevOps: update actions version in github workflows

[bastonero]

Certain versions of github actions have been definitely
deprecated. Therefore, we simply migrate to the latest
versions available.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.77%. Comparing base (85ecb45) to head (38501ad).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #89   +/-   ##
=======================================
  Coverage   86.77%   86.77%           
=======================================
  Files          34       34           
  Lines        2503     2503           
=======================================
  Hits         2172     2172           
  Misses        331      331           

Flag	Coverage Δ
pytests	86.77% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ 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.