chore(deps): update dependency webpack-sources to ^3.4.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
webpack-sources	^3.3.4 → ^3.4.1

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Release Notes

webpack/webpack-sources (webpack-sources)

v3.4.1

Compare Source

Patch Changes

• Implements more effective buffers and buffer for ReplaceSource and improve performance in other places. (by @​alexander-akait in #​211)

v3.4.0

Compare Source

Minor Changes

• Add Source.prototype.buffers() that returns the source as Buffer[]. ConcatSource, CachedSource, and CompatSource implement it without allocating an intermediate concatenated buffer, allowing consumers that can write multiple buffers at once (e.g. via writev) to avoid the overhead of Buffer.concat in deeply nested sources. (by @​alexander-akait in #​204)

Patch Changes

• fix: use Int32Array for signed VLQ delta accumulation in readMappings so cumulative values that go negative are preserved instead of wrapping to a large unsigned integer (by @​alexander-akait in #​206)

• Improved performance in many places. (by @​alexander-akait in #​209)

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