build: update terser-webpack-plugin to version 2.3.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
terser-webpack-plugin	dependencies	patch	2.3.2 -> 2.3.3

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Release Notes

webpack-contrib/terser-webpack-plugin

v2.3.3

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[filipesilva]

Note: this should also go on patch since it includes a fix to an important memory usage issue (webpack-contrib/terser-webpack-plugin#143).

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