Update the sp-mgt sample

[musale]

Sample

https://github.com/pnp/mgt-samples/tree/main/samples/app/sp-mgt

Author(s)

@gavinbarron

Suggestion

Remove the code added to transform lit files from the PR #14.

Upgrade the following packages:

    "@microsoft/sp-core-library": "^1.20.0",
    "@microsoft/sp-component-base": "^1.20.0",
    "@microsoft/sp-property-pane": "^1.20.0",
    "@microsoft/sp-webpart-base": "^1.20.0",
    "@microsoft/sp-lodash-subset": "^1.20.0",
    "@microsoft/sp-office-ui-fabric-core": "^1.20.0"
	// some other packages
	"@microsoft/sp-build-web": "^1.20.2",

Are you willing to help?

Yes