"Upload Lambda Function" Execution Memory (MB): limited to 3008, why not 10240?

**Describe the bug**
Unable to set Memory for Lambda function to the max of 10240MB, I can only use the old maximum of 3008MB. Setting to 10240MB via aws-lambda-tools-defaults.json and then publishing causes Visual Studio to crash.

**To Reproduce**
Steps to reproduce the behavior
C# project.
Right click on project, select "Publish to AWS Lambda...".
"Upload Lambda Function" dialogue comes up
Click "Next"
Second page comes up with, amongst other things, "Execution, Memory (MB):"
Click the drop down to select the memory, the maximum amount is 3008.
If I go to AWS Console, I can update the Memory to 10240.
If I try to set the Memory to 10240 in the aws-lambda-tools-defaults.json Visual Studio crashes.

**Expected behavior**
I should be able to set to 10240 in the drop down or the aws-lambda-tools-defaults.json file.

**Screenshots**

**Computer (please complete the following information):**

- Windows Version: 10 20H2
- Visual Studio Version: Community 2018 v 16.11.5
- AWS Toolkit for Visual Studio Version: 1.22.0.0

**Additional context**

Start with the "Upload Lambda Function" dialog and the aws-lambda-tools-defaults.json handling in a C# project. Reproduce the 3008 MB limit and the crash when 10240 is configured; done means the dialog and configuration accept 10240 MB without Visual Studio crashing.

Written by the indexing model from the issue text.