ci: only add commit suffix to linux packages for branch/PR builds

[BeryJu]

For dev: just the version, easier to install on dev containers
For branch/PR builds: include commit to identify
For release: version is unique, no commit is needed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 38.24%. Comparing base (1b25095) to head (3aa9ede).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #970      +/-   ##
==========================================
+ Coverage   38.12%   38.24%   +0.11%     
==========================================
  Files         227      227              
  Lines        8412     8412              
==========================================
+ Hits         3207     3217      +10     
+ Misses       4820     4813       -7     
+ Partials      385      382       -3     

Flag	Coverage Δ
go-e2e	45.83% <ø> (+0.16%)	⬆️
go-integration	17.52% <ø> (ø)
go-macos-26	15.84% <ø> (ø)
go-ubuntu-24.04	15.48% <ø> (ø)
go-ubuntu-24.04-arm	15.11% <ø> (ø)
go-windows-2025	15.16% <ø> (ø)
swift	3.40% <ø> (ø)

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[authentik-automation]

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