test(identity-lab): Add security and integration test suite - #124

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea, actions/setup-dotnet@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Illegal Attribute 'Disabled' on 'MudSelectItemGroupExtended' using pattern 'LowerCase' source location '(1627,20)-(1627,77)' (https://mudblazor.com/features/analyzers)

Illegal Attribute 'Disabled' on 'MudSelectItemGroupExtended' using pattern 'LowerCase' source location '(1627,20)-(1627,77)' (https://mudblazor.com/features/analyzers)