[Security] Bump loofah from 2.1.1 to 2.2.2

[dependabot-preview]

Bumps loofah from 2.1.1 to 2.2.2. This update includes security fixes.

Vulnerabilities fixed

Sourced from The Ruby Advisory Database.

Loofah XSS Vulnerability
Loofah allows non-whitelisted attributes to be present in sanitized
output when input with specially-crafted HTML fragments.

Patched versions: >= 2.2.1
Unaffected versions: none

Release notes

Sourced from loofah's releases.

v2.2.2

2.2.2 / 2018-03-22

Make public Loofah::HTML5::Scrub.force_correct_attribute_escaping!,
which was previously a private method. This is so that downstream gems
(like rails-html-sanitizer) can use this logic directly for their own
attribute scrubbers should they need to address CVE-2018-8048.

v2.2.1

Notably, this release mitigates CVE-2018-8048.

Changelog

Sourced from loofah's changelog.

2.2.2 / 2018-03-22

Make public Loofah::HTML5::Scrub.force_correct_attribute_escaping!,
which was previously a private method. This is so that downstream gems
(like rails-html-sanitizer) can use this logic directly for their own
attribute scrubbers should they need to address CVE-2018-8048.

2.2.1 / 2018-03-19

Addresses CVE-2018-8048. Loofah allowed non-whitelisted attributes to be present in sanitized output when input with specially-crafted HTML fragments.

This CVE's public notice is at https://github-redirect.dependabot.com/flavorjones/loofah/issues/144

2.2.0 / 2018-02-11

Features:

• Support HTML5 <main> tag. #133 (Thanks, MothOnMars!)
• Recognize HTML5 block elements. #136 (Thanks, MothOnMars!)
• Support SVG <symbol> tag. #131 (Thanks, baopham!)
• Support for whitelisting CSS functions, initially just calc and rgb. A Report with service provider details #122/KG - Notes Button Coloring #123/KG - Protocols Selectpicker width / other stuff #129 (Thanks, NikoRoberts!)
• Whitelist CSS property list-style-type. Sj completed date reset #68/Ac ml bootstrap table cookie #137/Ml wth refactor multiple line items controller #142 (Thanks, andela-ysanni and NikoRoberts!)

Bugfixes:

• Properly handle nested script tags. #127.

Commits

• 37af4ee version bump to 2.2.2
• 56e95a6 Make public force_correct_attribute_escaping!
• 9452bff use VersionInfo.instance
• 7541374 version bump to 2.2.1
• 70bd089 update Manifest.txt and CHANGELOG.md
• 332ec6a Merge branch 'flavorjones-remediate-attribute-escaping'
• f739cf8 tests and fix for CVE-2018-8048
• 0c97c74 SECURITY.md to publish vuln reporting process
• d64b74d bump the fake gemspec
• 08cc110 fix remaining rdoc format in README
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Note: This repo was added to Dependabot recently, so you'll receive a maximum of 5 PRs for your first few update runs. Once an update run creates fewer than 5 PRs we'll remove that limit.

You can always request more updates by clicking Bump now in your Dependabot dashboard.

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot ignore this [patch|minor|major] version will close this PR and stop Dependabot creating any more for this minor/major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
• @dependabot use (this|these) label[s] will set the current labels as the default for future PRs for this repo and language
• @dependabot use (this|these) reviewer[s] will set the current reviewers as the default for future PRs for this repo and language
• @dependabot use (this|these) assignee[s] will set the current assignees as the default for future PRs for this repo and language

Additionally, you can set the following in your Dependabot dashboard:

• Update frequency (including time of day and day of week)
• Automerge options (never/patch/minor, and dev/runtime dependencies)
• Pull request limits (per update run and/or open at any time)
• Out-of-range updates (receive only lockfile updates, if desired)
• Security updates (receive only security updates, if desired)

Finally, you can contact us by mentioning @dependabot.

[dependabot-preview]

Looks like loofah is up-to-date now, so this is no longer needed.