[Snyk] Security upgrade react-markdown from 8.0.7 to 9.0.0

[snyk-io]

Snyk has created this PR to fix 1 vulnerabilities in the pnpm dependencies of this project.

Snyk changed the following file(s):

• usage-based-subscriptions/package.json
• usage-based-subscriptions/pnpm-lock.yaml

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Regular Expression Denial of Service (ReDoS) SNYK-JS-DIFF-14917201	590

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🦉 Regular Expression Denial of Service (ReDoS)

[snyk-io]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues

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[snyk-io]

This major version upgrade introduces significant breaking changes, including new environment requirements and the removal of several key props. Code modifications are required for compatibility.

Prop Changes: The transformImageUri, transformLinkUri, and linkTarget props have been removed. They are replaced by a new urlTransform prop and the rehype-external-links plugin. The top-level className prop is also removed; wrap the component in a div instead.
Environment: The package now requires Node.js 16+ and React 18+.

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