Bump versions of dependencies coming from maintenance-packages

[carlossanlop]

Should unblock: dotnet/sdk#45042 (comment)

Latest versions:

• 4.6.0: https://www.nuget.org/packages/System.Buffers
• 4.6.0: https://www.nuget.org/packages/System.Memory
• 4.6.0: https://www.nuget.org/packages/System.Numerics.Vectors
• 6.1.0: https://www.nuget.org/packages/System.Runtime.CompilerServices.Unsafe
• 4.6.0: https://www.nuget.org/packages/System.Threading.Tasks.Extensions

[carlossanlop]

There's a failure and it looks related:

src\Tools\SemanticSearch\ReferenceAssemblies\SemanticSearch.ReferenceAssemblies.csproj(56,5): error : (NETCORE_ENGINEERING_TELEMETRY=Build) GenerateFilteredReferenceAssembliesTask failed with exception:
System.MissingMethodException: Method not found: 'System.ReadOnlySpan`1<!0> System.Collections.Immutable.ImmutableArray`1.AsSpan()'.
   at Microsoft.CodeAnalysis.CryptoBlobParser.IsValidPublicKey(ImmutableArray`1 blob)
   ...

[carlossanlop]

Maybe the failure would be resolved by dotnet/msbuild#11038 @ericstj , but @ViktorHofer mentioned it will take a couple months to flow into here. In the meanwhile, I don't know how we should get this failure resolved.

[ericstj]

I think you also need the properties and to use those properties where you use the packages. cc @MichaelSimons

Edit: nevermind, I see you have this in the patch in SDK. https://github.com/dotnet/sdk/pull/45042/files#diff-1ea18ff65faa2ae6fed570b83747086d0317f5e4bc325064f6c14319a9c4ff67 I misunderstood where the work was happening first.