Update dependency webpack to v5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
webpack	devDependencies	major	4.44.2 -> 5.4.0

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Release Notes

webpack/webpack

v5.4.0

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Bugfixes

• fix renaming in super class expression in nested scopes
• fix parsing and handling of browserlist queries
• fix a few edge cases with ESM-CJS interop and .mjs
• fix ASI edge cases

v5.3.2

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Bugfixes

• runtime-dependent concatenated modules can generate code for runtime-dependent execution order of concatenated modules

v5.3.1

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Bugfixes

• fix incorrect concatenation of modules when multiple runtimes are involved
  • fixes a "This should not happen" error
  • fixes a __webpack_require__(null) problem
• run CLI correctly after installing
• fixes a huge performance issue when processing minimized code with SourceMap
• Use string[] types instead of [string, ...string[]] for arrays that must not be empty
  • this is more convinient to use

Performance

• avoid incorrect store of counts in the ProgressPlugin, which causes unneeded serialization of the Persistent Cache
• upgrade terser-webpack-plugin for performance improvements
• upgrade webpack-sources for performance improvements

v5.3.0

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Features and Bugfixes

• generate runtime conditional code when modules are forcefully merged from multiple runtimes
  • This fixes a Cannot read property 'call' of undefined error in webpack runtime, because modules are used that are not in the graph in one runtime
• disabled source code analysis for side effects in non-production modes
  • this causes unnecessary changes to parent modules in development
  • add optimization.sideEffects: "flag" as option for this

v5.2.1

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Bugfixes

• add watchOptions.followSymlinks option to schema
• fix hard crash when calling resolve with undefined value
• fix emit problem when files have hash in query string
• fix unneeded generation of SourceMaps when no devtool is used
  • fixes a huge performance regression with terser-webpack-plugin

v5.2.0

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Features

• add sourceFilename and javascriptModule to asset info for plugins

Bugfixes

• fix variable name collision when using module concatenation
• fix arrow functions in ie 11
• fix this externals with module concatenation
• force update for enhanced-resolve for critical bugfixes (see changelog)

v5.1.3

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Bugfixes

• omit unused modules from chunks when modules are only unused in some runtimes
  • fixes Self-reference dependency has unused export name error
• fix order of asset optimization to fix conflict between compression-plugin and real hash plugin

v5.1.2

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Bugfixes

• revert: omit unused modules from chunk when modules are only unused in some runtimes
  • caused issues with mini-css modules

v5.1.1

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Bugfixes

• fix order of chunk hashing to allow to uses hashes in WebWorkers
• update to terser-webpack-plugin 5
  • reduces number of dependencies by dropping webpack 4 support
• omit unused modules from chunk when modules are only unused in some runtimes
  • fixes Self-reference dependency has unused export name error
• fix hanging production builds because of infinite loop in inner graph optimization
• Compilation.deleteAsset updates chunk to file mappings

v5.1.0

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Features

• expose webpack property from Compiler
• expose cleverMerge, EntryOptionPlugin, DynamicEntryPlugin

Bugfixes

• missing require("..").xxx in try-catch produces a warning instead of an error now
• handle reexports in concatenated modules correctly when they are side-effect-free
• fix incorrect deprecation message for ModuleTemplate.hooks.hash

v5.0.0

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Announcement and changelog

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻️ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
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The artifact failure details are included below:

File name: package-lock.json

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! Found: webpack@4.44.2
npm ERR! node_modules/webpack
npm ERR!   dev webpack@"5.4.0" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! dev webpack@"5.4.0" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! See /tmp/renovate-cache/others/npm/eresolve-report.txt for a full report.

npm ERR! A complete log of this run can be found in:
npm ERR!     /tmp/renovate-cache/others/npm/_logs/2020-11-05T00_19_58_835Z-debug.log

[ravichdev]

dependency-extraction-webpack-plugin doesn't work with Webpack 5 and it causes an exception with this PR. WordPress/gutenberg#26134, there are also some config changes needed in upstream @wordpress/ repos to enable the upgrade to Webpack 5.

[renovate]

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