fix(deps): update dependency webpack-sources to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
webpack-sources	^1.4.3 → ^2.3.1
@types/webpack-sources (source)	^1.4.7 → ^2.1.1

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Release Notes

webpack/webpack-sources (webpack-sources)

v2.3.1

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Performance

• fix type bug in CachedSource which lead to bad hashing performance

v2.3.0

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Performance

• add caching to node and listMap

v2.2.0

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Performance

• add caching to updateHash

v2.1.1

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Performance

• fix a performance bug when processing minimized files with SourceMaps

v2.1.0

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Bugfixes

• Some Sources use to return an empty SourceMap instead of null as map
  • They correctly return null instead now

v2.0.1

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Bugfixes

• fix crash with source "." is not in SourceMap

v2.0.0

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API

Additions

• add buffer method to Source
• add SizeOnlySource
• expose everything needed for serialization as public methods
• add CompatSource
• add support for a lazy function as original Source for CachedSource

Removals

• remove node and listNode methods from public API
• remove LineToLineMappedSource

Bugfixes

• ConcatSource falls back to sourceAndMap when node() or listMap() is not available
• PrefixSource do no longer insert prefix in the middle of the line in some cases
• fix updateHash for SourceMapSource
• fix crash when Source in CachedSource returns null map

Performance:

• avoid unnecessary sorting in ReplaceSource
• make exports lazy
• cache utf-8 conversion
• allow keeping Buffer instead of string and only convert it lazily
• add optimization step to ConcatSource which converts strings to RawSources (which cache)
• cache Buffers instead of string in CachedSource cache for map()

Changes

• increase minimum node.js version to 10.13

Other

• add Source types to hash

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