Bump sprockets from 3.7.1 to 4.0.0 in /docs_source

[dependabot[bot]]

Bumps sprockets from 3.7.1 to 4.0.0.

Changelog

Sourced from sprockets's changelog.

4.0.0

• Fixes for Ruby 2.7 keyword arguments warnings #625
• Manifest files are sorted alphabetically #626

4.0.0.beta10

• Fix YACB (Yet Another Caching Bug) Fix broken expansion of asset link paths

4.0.0.beta9

• Minimum Ruby version for Sprockets 4 is now 2.5+ which matches minimum ruby verision of Rails #604
• Fix threading bug introduced in Sprockets 4 #603
• Warn when two potential manifest files exist. #560

4.0.0.beta8

• Security release for CVE-2018-3760

4.0.0.beta7

• Fix a year long bug that caused Sprockets::FileNotFound errors when the asset was present #547
• Raise an error when two assets such as foo.js and foo.js.erb would produce the same output artifact (foo.js) [#549 #530]
• Process *.jst.eco.erb files with ERBProcessor

4.0.0.beta6

• Fix source map line offsets #515
• Return a 400 Bad Request when the path encoding is invalid. #514

4.0.0.beta5

• Reduce string allocations
• Source map metadata uses compressed form specified by the source map v3 spec. #402 [BREAKING]
• Generate index maps when decoding source maps isn't necessary. #402
• Remove fingerprints from source map files. #402

4.0.0.beta4

• Changing the version now busts the digest of all assets #404
• Exporter interface added #386
• Using ENV vars in templates will recompile templates when the env vars change. #365
• Source maps for imported sass files with sassc is now fixed #391
• Load paths now in error messages #322
• Cache key added to babel processor #387
• Environment#find_asset! can now be used to raise an exception when asset could not be found #379

4.0.0.beta3

• Source Map fixes #255 #367

... (truncated)

Commits

• 08fef08 v4.0.0
• 0ef4c97 Merge pull request #631 from rails/schneems/changelog
• 540b0d2 [ci skip] check changelog entry
• 02d4c0a Merge pull request #628 from ahorek/optimize_source_maps
• 4caa653 optimize source maps
• 365036d Merge pull request #627 from ahorek/kwargs
• 6e6d6a7 kwargs
• d9e7037 Merge pull request #625 from amatsuda/kwargs
• cbf3b82 Merge pull request #626 from amatsuda/sort_manifest_entries
• b416821 Sort manifest entries alphabetically before choosing one
• Additional commits viewable in compare view

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[dependabot[bot]]

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