Fix lint error

[linglingye001]

Fix lint error https://github.com/Azure/AppConfiguration-KubernetesProvider/actions/runs/25718318125/job/75513191791?pr=176

  Error: internal/controller/processor.go:257:13: inline: cannot inline: type parameter inference is not yet supported (govet)
  			maps.Copy(existingSecret.Data, resolvedSecret.Data)
  			         ^
  Error: internal/loader/configuration_setting_loader.go:1064:13: inline: cannot inline: type parameter inference is not yet supported (govet)
  			maps.Copy(secret[k].Data, v.Data)
  			         ^
  2 issues:
  * govet: 2
  
  Error: issues found