fix(dev-deps): update dev-deps for audit fix

[jankapunkt]

Summary

This updates all dev-dependencies to resolve any occurring audit issues.

Linked issue(s)

none

Involved parts of the project

Dev-Dependencies, mostly test infrastructure

Added tests?

none

OAuth2 standard

none

Reproduction

npm install && npm audit

[Copilot]

Pull request overview

This PR updates JavaScript dev-dependencies (and regenerates package-lock.json) to address npm audit findings in the project’s development/test/documentation toolchain.

Changes:

• Bump dev dependencies including mocha, sinon, and vitepress.
• Regenerate package-lock.json to reflect updated transitive dependencies and metadata (e.g., license fields).

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 1 comment.

File	Description
package.json	Updates selected dev dependency versions (notably mocha to a beta).
package-lock.json	Lockfile refresh for the new dev dependency graph (includes new Node engine constraints for updated tooling).

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[Copilot]

mocha is being upgraded to a beta (12.0.0-beta-9.2). In the lockfile this version declares engines.node as ^20.19.0 || >=22.12.0, which is a much higher (and very specific) minimum than this repo’s current engines.node: >=16.0.0 and the docs that state Node >=16. Please either (a) keep Mocha on a stable release compatible with the intended Node support range, or (b) explicitly bump the project’s supported Node version(s) (engines + documentation/CI) so the constraints are consistent.

Suggested change

	"mocha": "12.0.0-beta-9.2",
	"mocha": "10.8.2",

[jankapunkt]

We should update the docs, stating that the builds require at least node 16+, while tests require node 22+