Bump sprockets from 2.1.3 to 2.2.3

[dependabot[bot]]

Bumps sprockets from 2.1.3 to 2.2.3.

Commits

• 9b4083f Sprockets 2.2.3
• d61af15 Check for absolute paths in server URL before passing to find
• d6829b3 Sprockets 2.2.2
• cde6bc7 protected methods return false unless a second argument is passed to
• 2daf79b Sprockets 2.2.1
• 08ef21a Check for directory traversal after unescaping
• 2997be9 Sprockets 2.2.0
• 7bc45e2 Disable test for CI
• e057a6b Only define mime type encodings for 1.9
• abd40d9 Fix unused data var warning
• Additional commits viewable in compare view

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