Update dependency json-loader to v0.5.7

[renovate-tests]

This Pull Request updates dependency json-loader from v0.5.4 to v0.5.7

Commits

webpack/json-loader

0.5.7

• cda9d7f chore(release): 0.5.7
• a2cf6c6 fix: Strip deprecation warning (#​58)

0.5.6

• 525b28f chore(release): 0.5.6
• 5bb09bb docs(README): revert usage instructions (webpack =< v1.0.0) (#​56)
• d34395a fix(index): only export CJS modules (webpack v1.0.0) && add deprecation warning (webpack v2.0.0) (#​55)

0.5.5

• 78aac1b chore(release): 0.5.5
• 3f4f9cf chore: Adds release tooling
• e528e1d revert: add stringify option to output JSON object as string (#​43) (#​52)
• fa6392c docs(README): add warning about webpack 2 usage (#​49)
• 939a8cb fix: escape newline/paragraph separators (#​18)
• dbf1fa5 fix: add stringify option to output JSON object as string (#​45)
• 2993ea0 docs: Fix Maintainer section look
• fd7433e docs: Incorporate feedback from other readme's
• 8aa0828 docs(README): refactor for webpack v2
• b0df970 docs: Update License to match with webpack/webpack
• 5109fb9 docs: Update README with -loader suffix to reflect Webpack 2 change
• ee75f99 fix: Don't stringify with tabs to improve perf
• a06933c fix: Remove confusing statement about polyfill
• cc618ea docs: Create LICENSE file so GitHub displays its icon
• 7112af1 docs: updated installation instructions
• 43f96e7 chore(release): 0.5.4
• 611c979 chore(release): 0.5.3
• ea58b3e making sure source is string before parsing

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