Build output cleanup

[Ucodia]

Addresses #5114

Changes

First change upgrades simple-git package version replaces usage of require('simple-git/promise'') by require('simple-git') which fixes the following warning at the top of the build output:

=============================================
simple-git has supported promises / async await since version 2.6.0.
 Importing from 'simple-git/promise' has been deprecated and will
 report this error until the next major release of version 4.

To upgrade, change all 'simple-git/promise' imports to just 'simple-git'
=============================================

Second change upgrades the transitive dependency istanbul-reports from grunt-simple-nyc package which fixes the following warning at the bottom of the build output:

Handlebars: Access has been denied to resolve the property "statements" because it is not an "own property" of its parent.
You can add a runtime option to disable the check or this warning:
See https://handlebarsjs.com/api-reference/runtime-options.html#options-to-control-prototype-access for details
Handlebars: Access has been denied to resolve the property "branches" because it is not an "own property" of its parent.
You can add a runtime option to disable the check or this warning:
See https://handlebarsjs.com/api-reference/runtime-options.html#options-to-control-prototype-access for details
Handlebars: Access has been denied to resolve the property "functions" because it is not an "own property" of its parent.
You can add a runtime option to disable the check or this warning:
See https://handlebarsjs.com/api-reference/runtime-options.html#options-to-control-prototype-access for details
Handlebars: Access has been denied to resolve the property "lines" because it is not an "own property" of its parent.
You can add a runtime option to disable the check or this warning:
See https://handlebarsjs.com/api-reference/runtime-options.html#options-to-control-prototype-access for details

Screenshots of the change:

Not applicable.

PR Checklist

• npm run lint passes

[limzykenneth]

We are not actually using those release scripts anymore and they along with simple-git can probably be removed. I'll merge this anyway for now though.

[Ucodia]

@limzykenneth is there a task describing how the release process was transitioned? I can help with the cleanup.

[limzykenneth]

The release process are all handled via Github Actions CI whenever a version tag is pushed. It is documented here: https://github.com/processing/p5.js/blob/main/contributor_docs/release_process.md