Update Modern Script Editor to SPFx v1.20.0

[DevPio]

• New sample
• Bug fix/update
• Related issues: fixes #X, partially #Y, mentioned in #Z

What's in this Pull Request?

Updated SharePoint Framework to version 1.20.0

Node Version

v18.17.1

Checklist

This checklist is used to automatically pre-process your pull request; It is meant to help process pull requests in a timely manner, rather than hoops to jump through.

Put an x in all the items that apply ([x], no spaces between the [, the x, and the ] ). Make notes next to any that haven't been addressed.

• My pull request affects only ONE sample.
• My sample builds without any warnings
• I have updated the README.md file's Version history. For new samples, created a new README.md file matching this template
• My README.md has at least one static high-resolution screenshot (i.e. not a GIF) located in the assets folder.
• My README.md contains complete setup instructions, including pre-requisites and permissions required
• My solution includes a .nvmrc file indicating the version of Node.js

[Adam-it]

Thank you for opening a PR to our samples repo and helping us upgrade our project 👍
We will try to review this PR ASAP

[Adam-it]

@DevPio Awesome work 👏
I manged to build and add it to my tenant successfully 👍
script editor webpart brings some good old time 🙂

I added some few minor comments we could resolve before merging. Please do give them a double check and we are good to go 🚀

[Adam-it]

Perfect 🤩

[Adam-it]

Thank you @DevPio for a quick turn around.
This will be 🚢ed shortly 👍