bump dompurify version because of nasty xss bypass.

[MarcusSorealheis]

CATEGORY

Choose one

• Bug Fix
• Enhancement (new features, refinement)
• Refactor
• Add tests
• Build / Development Environment
• Documentation

SUMMARY

Bumped the dompurify version because of a nasty bypass reported in September.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TEST PLAN

Run the app. Everything should work. Tests should pass.

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

REVIEWERS

[codecov-io]

Codecov Report

Merging #8498 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #8498   +/-   ##
======================================
  Coverage    66.6%   66.6%           
======================================
  Files         449     449           
  Lines       22608   22608           
  Branches     2366    2366           
======================================
  Hits        15059   15059           
  Misses       7411    7411           
  Partials      138     138

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