chore(deps): bump dompurify from 2.4.7 to 2.5.6

[dependabot]

Bumps dompurify from 2.4.7 to 2.5.6.

Release notes

Sourced from dompurify's releases.

DOMPurify 2.5.6

• Fixed an issue with the execution logic of attribute hooks to prevent bypasses, thanks @​kevin-mizu
• Fixed a minor problem with the bower file pointing to the wrong dist path
• Updated several development dependencies

DOMPurify 2.5.5

• Fixed a minor issue with the dist paths in bower.js, thanks @​HakumenNC
• Fixed a minor issue with sanitizing HTML coming from copy&paste Word content, thanks @​kakao-bishop-cho

DOMPurify 2.5.4

• Fixed a bug with latest isNaN checks affecting MSIE, thanks @​tulach
• Fixed the tests for MSIE and fixed related test-runner

DOMPurify 2.5.3

• Fixed several mXSS variations found by and thanks to @​kevin-mizu & @​Ry0taK
• Added better configurability for comment scrubbing default behavior
• Added better hardening against Prototype Pollution attacks, thanks @​kevin-mizu
• Fixed some smaller issues in README and other documentation

DOMPurify 2.5.2

• Addressed and fixed a mXSS variation found by @​kevin-mizu
• Addressed and fixed a mXSS variation found by Adam Kues of Assetnote
• Updated tests for older Safari and Chrome versions

DOMPurify 2.5.1

• Fixed an mXSS sanitizer bypass reported by @​icesfont
• Added new code to track element nesting depth
• Added new code to enforce a maximum nesting depth of 255
• Added coverage tests and necessary clobbering protections

Note that this is a security release and should be upgraded to immediately. Please also note that further releases may follow as the underlying vulnerability is apparently new and further variations may be discovered.

DOMPurify 2.5.0

• Added new setting SAFE_FOR_XML to enable better control over comment scrubbing
• Updated the LICENSE file to show the accurate year number
• Updated several build and test dependencies

DOMPurify 2.4.9

• Fixed another conditional bypass caused by Processing Instructions, thanks @​Ry0taK
• Fixed the regex for HTML Custom Element detection, thanks @​AlekseySolovey3T

DOMPurify 2.4.8

• Fixed two possible bypasses when sanitizing an XML document and later using it in HTML, thanks @​Slonser

Commits

• d78f241 chore: Preparing 2.5.6 release
• 38e8410 fix: Added changes to 2.x regarding attribute value checks
• 9a7cd98 See #961
• de2545c chore: Preparing 2.5.5 release
• f1e27e6 chore: Also removed depth counter logic from 2.x branch for now
• 10c1261 docs: Updated README ever so slightly
• 1c92880 test: Fixed two more tests for MSIE11 and Edge 18
• 1401208 test: Fixed more tests for MSIE and Edge 18
• 2c6410a test: Fixed several new tests for MSIE11 and Edge 18
• 2c9bca9 test: Changed github config to include MSIE tests for 2.x
• 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.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor 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)
  You can disable automated security fix PRs for this repo from the Security Alerts page.

[aleks-p]

@dependabot rebase

[aleks-p]

@dependabot rebase

[dependabot]

Looks like this PR has been edited by someone other than Dependabot. That means Dependabot can't rebase it - sorry!

If you're happy for Dependabot to recreate it from scratch, overwriting any edits, you can request @dependabot recreate.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.

[aleks-p]

@dependabot recreate

[dependabot]

Looks like this PR is closed. If you re-open it I'll rebase it as long as no-one else has edited it (you can use @dependabot reopen if the branch has been deleted).

[aleks-p]

@dependabot reopen

[aleks-p]

@dependabot recreate