Remove incorrect NotNullIfNotNull attributes in SharedAudioSystem (#5… · space-wizards/RobustToolbox@19a87fb

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3.6.0, actions/setup-dotnet@v3.2.0. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Build: Robust.Shared/Containers/SharedContainerSystem.cs#L580

'SharedContainerSystem.TryGetContainingContainer(EntityUid, out BaseContainer?, MetaDataComponent?, TransformComponent?)' is obsolete: 'Use Entity<T> variant'

Build: Robust.Shared/Containers/SharedContainerSystem.cs#L650

'SharedContainerSystem.TryGetContainingContainer(EntityUid, out BaseContainer?, MetaDataComponent?, TransformComponent?)' is obsolete: 'Use Entity<T> variant'

Build: Robust.Shared/Containers/SharedContainerSystem.cs#L663

'SharedContainerSystem.TryGetContainingContainer(EntityUid, out BaseContainer?, MetaDataComponent?, TransformComponent?)' is obsolete: 'Use Entity<T> variant'

Build: Robust.Shared/Containers/ContainerSlot.cs#L75

'Logger.Warning(string)' is obsolete: 'Use ISawmill.Warning'

Build: Robust.Shared/Containers/ContainerManagerComponent.cs#L32

'Component.Owner' is obsolete: 'Update your API to allow accessing Owner through other means'

Build: Robust.Shared/GameObjects/Systems/SharedUserInterfaceSystem.cs#L226

'BoundUserInterface.DeferredClose' is obsolete

Build: Robust.Shared/GameObjects/Systems/SharedUserInterfaceSystem.cs#L407

'BoundUserInterface.DeferredClose' is obsolete

Build: Robust.Shared/GameObjects/Systems/SharedUserInterfaceSystem.cs#L458

'BoundUserInterface.DeferredClose' is obsolete

Build: Robust.Shared/Player/Filter.cs#L279

'EntitySystem.TryGet<T>(out T?)' is obsolete: 'Either use a dependency, resolve and cache IEntityManager manually, or use EntityManager.System<T>()'