Update babel-loader requirement from 6.2.4 to 6.4.1

[dependabot-preview[bot]]

Updates the requirements on babel-loader to permit the latest version.

Release notes

Sourced from babel-loader's releases.

v6.4.1

🐛 Bug Fix

• Fixed reset of BABEL_ENV when options.forceEnv is used (#420) @​nikopavlica

Changelog

Sourced from babel-loader's changelog.

v6.4.1

🐛 Bug Fix

• Fixed reset of BABEL_ENV when options.forceEnv is used (#420) @​nikopavlica

v6.4.0

🚀 New Feature

• added metadata passing from babel to webpack, which is currently used by react-intl (#398) @​Ognian

v6.3.2

😢 Regression

• forceEnv was interfering with regular environment handling

v6.3.1

🐛 Bug Fix

• The new forceEnv options wasn't working as expected (#379) @​chrisvasz

v6.3.0

🚀 New Feature

• Add new config option forceEnv (#368) @​moimael

Allow to override BABEL_ENV/NODE_ENV at loader-level. Useful for isomorphic applications which have separate babel config for client and server.

🐛 Bug Fix

• Update loader-utils dependency to ^0.2.16 to fix compatibility with webpack 2 (#371) @​leonaves

💅 Polish

• Improve FS caching to do less sync calls which improves performance slightly (#375) @​akx

v6.2.10

Support for webpack 2.2-rc has been added in this release

🐛 Bug Fix

• If cache directory not writable, try to fallback to tmpdir before failing

v6.2.9

... (truncated)

Commits

• 48325ea 6.4.1
• f3241f8 Fixed reset of BABEL_ENV when options.forceEnv is used (#420)
• 36db87b 6.4.0
• da6201a Update CHANGELOG.md for 6.4.0
• ca3318b Optimize code after merge of #398
• cd10945 Update yarn.lock
• a8fd06e Sort package.json
• 1fbbdf3 added metadata passing from babel to webpack (#398)
• 2fbcc01 document globalOptions (#365)
• 9ea739f Docs: change babel-preset-es2015 to babel-preset-env (#404) [skip ci]
• Additional commits viewable in compare view

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