Upgraded project to SPFx v1.20.0

[mromiszewski]

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

What's in this Pull Request?

Upgraded solution to SPFx v1.20.0
Upgraded PnPjs to 4.6.0
Added chunk/batch size configuration to property panel settings

Node Version

(Use node -v to get the version of Node you used to build this sample)

Node version used:
v18.18.0

Checklist

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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

[github-actions]

Validation failed!

File: samples/react-csv-importer/assets/sample.json

• Invalid url for thumbnail Added web part tutorials. #1 property: The provided URL is not responding correctly!
• Invalid url for thumbnail Updated and made instructions more clear #2 property: The provided URL is not responding correctly!

[github-actions]

Validation failed!

File: samples/react-csv-importer/assets/sample.json

• Invalid url for thumbnail Added web part tutorials. #1 property: The provided URL is not responding correctly!
• Invalid url for thumbnail Updated and made instructions more clear #2 property: The provided URL is not responding correctly!

[hugoabernier]

Thank you @mromiszewski for your update! Awesome!.

Thank you for sharing your sample with others - you rock! 👏🥇👩‍💻