Update dependency uglify-js to v3.13.8

Created by: renovate[bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
uglify-js	3.13.7 -> 3.13.8

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Release Notes

mishoo/UglifyJS

v3.13.8

Compare Source

Features

• improve compression on tagged template literal (e0695ef)
• support source mapping of class property (5d4e6e3)

Bug Fixes

• arguments object (de376c3, df47632)
• function scope (eb08fed)
• lexical declaration (8b0c836, 1e787c5, 7caab39)
• optional chaining operator (4a19575)
• private class property (d2a45ba)
• static class field (eff45ea)
• throw statement (d6152e6)

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