Error: Failed to install addin 'Cake.Webpack'

## Expected Behavior
Install addin 'Cake.Webpack' successfully.

## Current Behavior
> Error: Failed to install addin 'Cake.Webpack'.

## Possible Solution
Workaround:
copy tools\Addins\Cake.Webpack.0.3.0\lib\net461 to tools\Addins\Cake.Webpack.0.3.0\lib\net6.0

## Steps to Reproduce (for bugs)

1. Add `#addin "Cake.Webpack"`
2. dotnet cake --verbosity=diagnostic
3.
4.

## Context

## Your Environment

* Addin version used: Cake.Webpack
* Cake Version used: 2.0.0
* Operating System: Win10 64Bit

It could be installed with the workaround. But when running webpack, its output is not aligned to left, not pretty as before.