[main] Update dependencies from dotnet/linker

[dotnet-maestro]

This pull request updates the following dependencies

From https://github.com/dotnet/linker

• Subscription: 0d6d6ae4-f71f-4395-53e6-08d8e409d87d
• Build: 20211201.1
• Date Produced: December 1, 2021 11:59:05 AM UTC
• Commit: 42460a6b2cbed0d9c09e1c28fd3bb753bdc3f99f
• Branch: refs/heads/main

• Updates:
  • Microsoft.NET.ILLink.Tasks: from 7.0.100-1.21562.1 to 7.0.100-1.21601.1

[akoeplinger]

@vitek-karas looks like there's some issue with the System.Private.CoreLib pdb:

 System.Private.CoreLib -> D:\a\_work\1\s\artifacts\bin\coreclr\windows.x64.Release\IL\System.Private.CoreLib.dll
File 'D:\a\_work\1\s\artifacts\bin\coreclr\windows.x64.Release\IL\System.Private.CoreLib.pdb' not found or doesn't match 'D:\a\_work\1\s\artifacts\bin\coreclr\windows.x64.Release\IL\System.Private.CoreLib.dll'.
D:\a\_work\1\s\.packages\microsoft.dotnet.arcade.sdk\7.0.0-beta.21576.4\tools\SymStore.targets(70,5): error MSB3073: The command ""D:\a\_work\1\s\.packages\microsoft.diasymreader.pdb2pdb\1.1.0-beta2-19575-01\tools\Pdb2Pdb.exe" "D:\a\_work\1\s\artifacts\bin\coreclr\windows.x64.Release\IL\System.Private.CoreLib.dll" /out "D:\a\_work\1\s\artifacts\SymStore\Release\System.Private.CoreLib\net7.0\x64\System.Private.CoreLib.pdb" /srcsvrvar SRC_INDEX=public" exited with code 2. [D:\a\_work\1\s\src\coreclr\System.Private.CoreLib\System.Private.CoreLib.csproj]

[vitek-karas]

dotnet/cecil#32 has the candidate fix for the Pdb2Pdb failure.
Once merged we will have to merge the new cecil into dotnet/linker and then let it flow here.

[vitek-karas]

dotnet/linker#2405 is now merged. Once picked up it should fix the PDB failures.

[akoeplinger]

The Build iOSSimulator x86 Debug AllSubsets_Mono failure is unrelated.