fix: Remove CVE-2020-7774 vulnerability by updating the y18n package

[sw-joelmut]

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.

[coveralls]

Pull Request Test Coverage Report for Build 9668605277

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.4%) to 84.075%

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Totals
Change from base Build 9668108895:	-0.4%
Covered Lines:	20343
Relevant Lines:	22900

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9668605277

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 84.431%

---

Totals
Change from base Build 9668108895:	0.0%
Covered Lines:	20425
Relevant Lines:	22900

---

💛 - Coveralls