ci: remove every-commit trigger form nightly build

[lokitoth]

We should not be triggering the nightly build pipeline on every commit.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.59%. Comparing base (71bf20b) to head (e329be3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5278   +/-   ##
=======================================
  Coverage   70.59%   70.59%           
=======================================
  Files         180      180           
  Lines       11668    11668           
=======================================
  Hits         8237     8237           
  Misses       3431     3431           

Flag	Coverage Δ
unittests	70.59% <ø> (ø)

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