Move to .NET SDK 5.0.102

The associated runtime version contains the fix for a CLR crash that we
are hitting in our infrastructure. Moving should help us increase
stability here.

dotnet/runtime#45557

docs/contributing/Building, Debugging, and Testing on Windows.md

@@ -20,7 +20,7 @@ The minimal required version of .NET Framework is 4.7.2.
     - Ensure Visual Studio is on Version "16.8" or greater
     - Ensure "Use previews of the .NET Core SDK" is checked in Tools -> Options -> Environment -> Preview Features
     - Restart Visual Studio
-1. [.NET Core SDK 5.0](https://dotnet.microsoft.com/download/dotnet-core/5.0) [Windows x64 installer](https://dotnet.microsoft.com/download/dotnet/thank-you/sdk-5.0.100-windows-x64-installer)
+1. [.NET Core SDK 5.0](https://dotnet.microsoft.com/download/dotnet-core/5.0) [Windows x64 installer](https://dotnet.microsoft.com/download/dotnet/thank-you/sdk-5.0.102-windows-x64-installer)
 1. [PowerShell 5.0 or newer](https://docs.microsoft.com/en-us/powershell/scripting/setup/installing-windows-powershell). If you are on Windows 10, you are fine; you'll only need to upgrade if you're on earlier versions of Windows. The download link is under the ["Upgrading existing Windows PowerShell"](https://docs.microsoft.com/en-us/powershell/scripting/install/installing-windows-powershell?view=powershell-6#upgrading-existing-windows-powershell) heading.
 1. Run Restore.cmd
 1. Open Roslyn.sln

global.json

@@ -1,11 +1,11 @@
 {
   "sdk": {
-    "version": "5.0.100",
+    "version": "5.0.102",
     "allowPrerelease": true,
     "rollForward": "major"
   },
   "tools": {
-    "dotnet": "5.0.100",
+    "dotnet": "5.0.102",
     "vs": {
       "version": "16.8"
     },