update webpack dependencies

[karanh37]

Describe your changes:

Fixes Build timeout

Webpack 5 is using more memory in our CI due to memory leaks found here The CI builds are failing due to this. We don't want to increase the resources and as a result we are adding this fix. The problem is with jest worker leaking memory. For fix, we have made resolution of terser webpack plugin to 5.1.1 which uses older version of jest worker v26.

I worked on ... because ...

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Type of change:

• [ ] Bug fix
• [ ] Improvement
• [ ] New feature
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation

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Checklist:

• [x] I have read the CONTRIBUTING document.
• [ ] My PR title is Fixes <issue-number>: <short explanation>
• [ ] I have commented on my code, particularly in hard-to-understand areas.
• [ ] For JSON Schema changes: I updated the migration scripts or explained why it is not needed.

[github-actions[bot]]

Jest test Coverage

UI tests summary

Lines	Statements	Branches	Functions
	64.35% (37410/58139)	41.01% (14840/36182)	43.1% (4512/10469)