Bump dotnet-sdk from 10.0.103 to 10.0.400 - #2383

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: crazy-max/ghaction-chocolatey@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Class CommandInvokerTests is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class CohortQueryBuilderWithCacheTests is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class CohortIdentificationTests is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class UITests is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class QueryCachingDatabaseTests is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class DataLoadEngineTestsBase is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class AggregateBuilderTestsBase is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class CommandInvokerTests is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)

Class CohortQueryBuilderWithCacheTests is used as a base class and should be abstract (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit1034.md)