chore: allow running integ tests on all branches

[rix0rrr]

We used to only run integ tests for PRs targeting main.

That makes it impossible to run integ tests for stacked PRs, which is inconvenient. Remove the restriction and run integ tests on all PRs.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.15%. Comparing base (6f1df5d) to head (bb13bc8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #431   +/-   ##
=======================================
  Coverage   79.15%   79.15%           
=======================================
  Files          54       54           
  Lines        6889     6889           
  Branches      773      773           
=======================================
  Hits         5453     5453           
  Misses       1418     1418           
  Partials       18       18           

Flag	Coverage Δ
suite.unit	79.15% <ø> (ø)

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