Addresses #4684
#minor

Description

This PR updates the version of the y18n package to 4.0.3 and 5.0.5 to fix the CVE-2020-7774 vulnerability.
Along the way, to address this y18n package issue, we have updated all webpack related packages to the latest supported node 16 version, fixing the following vulnerabilities.

• ssri https://github.com/microsoft/botbuilder-js/security/dependabot/25 - CVE-2021-27290
• terser https://github.com/microsoft/botbuilder-js/security/dependabot/215 - CVE-2022-25858
• ini https://github.com/microsoft/botbuilder-js/security/dependabot/15 - CVE-2020-7788

Specific Changes

• Updated y18n to 4.0.3 and 5.0.5.
• Updated ssri and ini packages to latest patch release.
• Updated webpack and webpack-cli to latest version of each that support node 16.
• Updated webpack plugins to latest versions.
• Updated webpack config based on the new version.

Testing

The following images show the y18n package updated version.