Merge pull request #1626 from space-syndicate/upstream-sync · space-syndicate/space-station-14@5e1f077

'ISerializationHooks' is obsolete: 'Avoid using ISerializationHooks in favour of (Custom)TypeSerializers or ComponentInit-Events.'

'MarkupNode' overrides Object.Equals(object o) but does not override Object.GetHashCode()

'ISerializationHooks' is obsolete: 'Avoid using ISerializationHooks in favour of (Custom)TypeSerializers or ComponentInit-Events.'

'ISerializationHooks' is obsolete: 'Avoid using ISerializationHooks in favour of (Custom)TypeSerializers or ComponentInit-Events.'

'ISerializationHooks' is obsolete: 'Avoid using ISerializationHooks in favour of (Custom)TypeSerializers or ComponentInit-Events.'

'Logger.ErrorS(string, Exception, string, params object?[])' is obsolete: 'Use ISawmill.Error'

'ICommonSession.ConnectedClient' is obsolete: 'Just use the Channel field instead.'

'ICommonSession.ConnectedClient' is obsolete: 'Just use the Channel field instead.'

'ICommonSession.ConnectedClient' is obsolete: 'Just use the Channel field instead.'

'ICommonSession.ConnectedClient' is obsolete: 'Just use the Channel field instead.'

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