refactor: Use custom Gomega matcher to assert VulnerabilityReports

[danielpacak]

Signed-off-by: Daniel Pacak pacak.daniel@gmail.com

[codecov]

Codecov Report

Merging #461 (eb69126) into main (98d5ad2) will increase coverage by 0.66%.
The diff coverage is 83.56%.

@@            Coverage Diff             @@
##             main     #461      +/-   ##
==========================================
+ Coverage   69.17%   69.83%   +0.66%     
==========================================
  Files          57       58       +1     
  Lines        3478     3551      +73     
==========================================
+ Hits         2406     2480      +74     
- Misses        788      789       +1     
+ Partials      284      282       -2     

Impacted Files	Coverage Δ
itest/matcher/matcher.go	83.56% <83.56%> (ø)
pkg/operator/controller/configauditreport.go	67.61% <0.00%> (+0.95%)	⬆️
pkg/operator/controller/vulnerabilityreport.go	64.48% <0.00%> (+1.40%)	⬆️
pkg/operator/controller/ciskubebenchreport.go	65.76% <0.00%> (+4.34%)	⬆️

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