[ci] Decrease verbosity when running the tutorial from the CI

[vkarak]

I don't why we had --vv, but I've reverted it.

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (master@833dafc). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head 87fd300 differs from pull request most recent head 3f171cc. Consider uploading reports for the commit 3f171cc to get more accurate results

@@            Coverage Diff            @@
##             master    #2299   +/-   ##
=========================================
  Coverage          ?   86.12%           
=========================================
  Files             ?       56           
  Lines             ?    10208           
  Branches          ?        0           
=========================================
  Hits              ?     8792           
  Misses            ?     1416           
  Partials          ?        0           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 833dafc...3f171cc. Read the comment docs.