[Snyk] Security upgrade pa11y from 8.0.0 to 9.0.0

[JJediny]

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

Snyk changed the following file(s):

• package.json
• package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue
	Allocation of Resources Without Limits or Throttling SNYK-JS-BASICFTP-16438941

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🦉 Allocation of Resources Without Limits or Throttling

[Copilot]

Pull request overview

Upgrades the accessibility testing dependency pa11y to a new major version in order to remediate a Snyk-reported vulnerability in the npm dependency tree.

Changes:

• Bump pa11y from ^8.0.0 to ^9.0.0 in package.json.
• Refresh package-lock.json to lock pa11y@9.0.0 and its updated transitive dependencies (notably newer Puppeteer/browser-related packages).

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
package.json	Updates the pa11y devDependency to ^9.0.0 for the security remediation.
package-lock.json	Updates the lockfile to reflect pa11y@9.0.0 and corresponding transitive dependency changes.

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