Bump tinymce from 7.9.1 to 7.9.3

[dependabot]

Bumps tinymce from 7.9.1 to 7.9.3.

Changelog

Sourced from tinymce's changelog.

7.9.3 - 2026-05-19

Security

• Fixed media plugin data-mce-object injection leading to stored XSS. #TINY-14357
• Fixed stored XSS vulnerability through mce:protected comments. #TINY-14353
• Fixed stored XSS vulnerability through data-mce- prefixed src, href, style attributes. #TINY-14333

7.9.2 - 2026-02-11

Deprecated

• The default value of allow_html_in_comments will change from true to false in TinyMCE 8.x. #TINY-11900

Security

• Updated dependencies and parsing logic for enhanced content sanitization. HTML-like content in comments and certain legacy patterns are now sanitized more strictly when xss_sanitization is enabled (default). The Introduced allow_html_in_comments option provides control over comment node sanitization behavior. #TINY-11900
• Introduced allow_html_in_comments option (boolean, default: true) to control handling of HTML-like syntax in comment nodes. This option will default to false in TinyMCE 8.x. #TINY-11900

Commits

• 9dac5bb TINY-14334: Fix failing test for 7.9.3 patch release
• 710d12b TINY-14334: Lint fix for 7.9.3 patch release
• 76f8454 TINY-14334: Add changelog for 7.9.3 patch release
• 1d4c86b TINY-14357: Fixed data-mce-object injection (#19)
• 0029dad TINY-14333: Fixed stored XSS vulnerability through data-mce- prefixed src...
• a7d7701 TINY-14353: Fixed stored XSS vulnerability through mce:protected comments (...
• 58475df TINY-13699: Bump package.json for next release
• fa9eb9d TINY-13699: Add changelog for 7.9.2 patch release (#10888)
• c323038 TINY-12247: Fix flaky tests (#10521)
• df337f6 TINY-13655: Fix failing tests in firefox (#10859)
• Additional commits viewable in compare view

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[dependabot]

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