v9.0.0

What's Changed

• #242 - optimizations (@jods4)
• #247 - reduce allocations (@nblumhardt)
• #244 - document {SourceContext} for MEL logger category (@DavidHopkinsFbr)
• #246 - implement ISupportExternalScope in SerilogLoggerProvider (@david-obee)
• #232 - support ValueTuple arguments to ILogger.BeginScope() (@jimbojim1997)
• #249 - support for ITuple arguments to ILogger.BeginScope() (@sungam3r)
• #252 - remove logger scope side-effects (@pavel-faltynek)
• #255 - optimize/reduce allocations (@epeshk)
• #260 - EventId property cache improvements/optimization (@AndreReise)
• #262 - support IAsyncDisposable on .NET 6+ (@agehrke)