fix: Handle legacy image pull secrets of type kubernetes.io/dockercfg

[danielpacak]

Resolves: #569

Signed-off-by: Daniel Pacak [email protected]

[codecov]

Codecov Report

Merging #577 (e908c2c) into main (903d2fa) will increase coverage by 0.11%.
The diff coverage is 70.00%.

@@            Coverage Diff             @@
##             main     #577      +/-   ##
==========================================
+ Coverage   71.18%   71.29%   +0.11%     
==========================================
  Files          63       63              
  Lines        4074     4073       -1     
==========================================
+ Hits         2900     2904       +4     
+ Misses        854      848       -6     
- Partials      320      321       +1     

Impacted Files	Coverage Δ
pkg/kube/secrets.go	60.56% <57.14%> (-0.05%)	⬇️
pkg/plugin/trivy/plugin.go	78.82% <100.00%> (-0.34%)	⬇️
pkg/operator/controller/vulnerabilityreport.go	70.37% <0.00%> (-1.24%)	⬇️
pkg/operator/controller/configauditreport.go	71.63% <0.00%> (+1.44%)	⬆️
pkg/operator/controller/ciskubebenchreport.go	66.11% <0.00%> (+3.88%)	⬆️

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