OCPBUGS-99027: Fix CVE-2026-49978 - bump DOMPurify to >= 3.4.7

[germanparente]

What this PR does / why we need it

CVE-2026-49978: DOMPurify IN_PLACE sanitization bypass via attached Shadow Root inside <template>.content (XSS). Affects DOMPurify versions <= 3.4.6.

monitoring-plugin has DOMPurify 3.3.0 as a transitive dependency via monaco-editor. This adds a dompurify override in package.json to bump it to ^3.4.11 (resolved to 3.4.12).

Which issue(s) this PR fixes

OCPBUGS-99027

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.

[openshift-ci-robot]

@germanparente: This pull request references Jira Issue OCPBUGS-99027, which is invalid:

• expected dependent Jira Issue OCPBUGS-99028 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ASSIGNED instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

What this PR does / why we need it

CVE-2026-49978: DOMPurify IN_PLACE sanitization bypass via attached Shadow Root inside <template>.content (XSS). Affects DOMPurify versions <= 3.4.6.

monitoring-plugin has DOMPurify 3.3.0 as a transitive dependency via monaco-editor. This adds a dompurify override in package.json to bump it to ^3.4.11 (resolved to 3.4.12).

Which issue(s) this PR fixes

OCPBUGS-99027

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.

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[jgbernalp]

/label qe-approved

[jgbernalp]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: germanparente, jgbernalp

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