[CI] Do not deploy pages in repo forks

[aobolensk]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.91%. Comparing base (afce18e) to head (270d0c9).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #665   +/-   ##
=======================================
  Coverage   64.91%   64.91%           
=======================================
  Files          15       15           
  Lines         456      456           
  Branches      166      166           
=======================================
  Hits          296      296           
  Misses        136      136           
  Partials       24       24           

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