remove devDependency babel-runtime, replace with core-js@^3

[shazron]

Description

Related: adobe/generator-add-web-assets-exc-react#1

babel-runtime includes core-js@2, and is over 5 years old. With the new parcel, which includes babel, it requires core-js@^3.

Error

This old dependency is causing an error during aio app run:

❯ aio app run
   create .vscode/launch.json

No change to package.json was detected. No package manager install will be executed.

To view your local application:
  -> https://localhost:9080
To view your deployed application in the Experience Cloud shell:
  -> https://experience.adobe.com/?devMode=true#/custom-apps/?localDevUrl=https://localhost:9080
press CTRL+C to terminate dev environment
🚨 Build failed.

@parcel/core: Failed to resolve 'core-js/modules/es.symbol.async-iterator.js' from
'/Users/shazron/Documents/git/work/adobe/aio-cli-plugin-app/node_modules/@parcel/transformer-js/lib/JSTransformer.js'

  /Users/shazron/Desktop/tmp/exc-1/src/dx-excshell-1/web-src/src/index.js:1:1
  > 1 | /*
  >   | ^
    2 | * <license header>
    3 | */

Fix

1. remove devDep babel-runtime
2. add devDep core-js@^3

[aiojbot]

JIRA issue created: https://jira.corp.adobe.com/browse/ACNA-1674