[Security] Bump rails-html-sanitizer from 1.0.3 to 1.0.4

[dependabot-preview]

Bumps rails-html-sanitizer from 1.0.3 to 1.0.4. This update includes security fixes.

Vulnerabilities fixed

Sourced from The Ruby Advisory Database.

XSS vulnerability in rails-html-sanitizer
There is a possible XSS vulnerability in rails-html-sanitizer. The gem allows
non-whitelisted attributes to be present in sanitized output when input with
specially-crafted HTML fragments, and these attributes can lead to an XSS attack
on target applications.

This issue is similar to CVE-2018-8048 in Loofah.

Patched versions: >= 1.0.4
Unaffected versions: none

Release notes

Sourced from rails-html-sanitizer's releases.

v1.0.4

• Fix CVE-2018-3741.

Commits

• 53bf066 Prepare to 1.0.4 release
• f3ba1a8 Make sure we address CVE-2018-8048
• 7aea595 Remove rbx since it doesn't seem to install.
• 9057f42 Merge pull request #66 from fschwahn/improve-tests
• 2a2a715 Fix deprecation warning from Minitest
• 2e8a706 Make tests pass again with recent nokogiri versions
• 267b121 Rename test to better reflect what is actually tested
• 663bf35 typos
• 362f72d We're still testing against ruby 1.9 and 2.0 that aren't supported by nokogir...
• 1f8b16f activesupport 5 doesn't support ruby < 2.2.2 that are still tested in this repo
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #91.