Bump terser from 5.15.0 to 5.19.4

[dependabot]

Bumps terser from 5.15.0 to 5.19.4.

Changelog

Sourced from terser's changelog.

v5.19.4

• Prevent creating very deeply nested ternaries from a long list of if..return
• Prevent inlining classes into other functions, to avoid constructors being compared.

v5.19.3

• Fix side effect detection of optional?.chains.
• Add roundRect to domprops.js (#1426)

v5.19.2

• fix performance hit from avoiding HTML comments in the output

v5.19.1

• Better avoid outputting </script> and HTML comments.
• Fix unused variables in class static blocks not being dropped correctly.
• Fix sourcemap names of methods that are async or static

v5.19.0

• Allow /*@__MANGLE_PROP__*/ annotation in object.property, in addition to property declarations.

v5.18.2

• Stop using recursion in hoisted defuns fix.

v5.18.1

• Fix major performance issue caused by hoisted defuns' scopes bugfix.

v5.18.0

• Add new /*@__MANGLE_PROP__*/ annotation, to mark properties that should be mangled.

v5.17.7

• Update some dependencies
• Add consistent sorting for v RegExp flag
• Add inert DOM attribute to domprops

v5.17.6

• Fixes to mozilla AST input and output, for class properties, private properties and static blocks
• Fix outputting a shorthand property in quotes when safari10 and ecma=2015 options are enabled
• configurable and enumerable, used in Object.defineProperty, added to domprops (#1393)

v5.17.5

• Take into account the non-deferred bits of a class, such as static properties, while dropping unused code.

v5.17.4

• Fix crash when trying to negate a class (!class{})
• Avoid outputting comments between yield/await and its argument
• Fix detection of left-hand-side of assignment, to avoid optimizing it like any other expression in some edge cases

v5.17.3

• Fix issue with trimming a static class property's contents accessing the class as this.

... (truncated)

Commits

• c698427 5.19.4
• 1233c98 update changelog
• bdd2349 prevent creating very deeply nested ternaries from a long list of `if..return...
• 33d53e0 prevent inlining classes into other functions, to avoid constructors being co...
• 7f34b52 5.19.3
• 840a5d5 changelog
• 2e0b75a fix side effect detection of optional?.chains. Closes #1430
• 27c0a3b Added roundRect to domprops.js (#1426)
• 931f8a5 Update LICENSE
• 8f22035 5.19.2
• Additional commits viewable in compare view

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