RHOAIENG-10449 - Add PR check for additional-demos notebooks

[jiripetrlik]

Issue link

What changes have been made

Verification steps

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[sutaakar]

Any idea why e2e tests fail?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.00%. Comparing base (9af07a0) to head (966ae7f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #684   +/-   ##
=======================================
  Coverage   93.00%   93.00%           
=======================================
  Files          36       36           
  Lines        2403     2403           
=======================================
  Hits         2235     2235           
  Misses        168      168           

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[openshift-ci]

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