chore(backport release-1.2): refactor: change generic secret label

[akuitybot]

Automated backport to release-1.2, triggered by a label in #3331.

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[codecov]

Codecov Report

Attention: Patch coverage is 83.87097% with 10 lines in your changes missing coverage. Please review.

Project coverage is 52.47%. Comparing base (b934ffa) to head (af05864).
Report is 1 commits behind head on release-1.2.

Files with missing lines	Patch %	Lines
internal/api/delete_project_secret_v1alpha1.go	25.00%	2 Missing and 1 partial ⚠️
internal/api/list_project_secrets_v1alpha1.go	86.36%	2 Missing and 1 partial ⚠️
internal/directives/simple_engine_promote.go	89.28%	2 Missing and 1 partial ⚠️
internal/api/update_project_secret_v1alpha1.go	85.71%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           release-1.2    #3350      +/-   ##
===============================================
+ Coverage        52.02%   52.47%   +0.45%     
===============================================
  Files              295      291       -4     
  Lines            26763    26617     -146     
===============================================
+ Hits             13923    13968      +45     
+ Misses           12078    11886     -192     
- Partials           762      763       +1     

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