Bump ssri from 8.0.0 to 8.0.1 in /demo
Bump ssri from 8.0.0 to 8.0.1 in /demo

Bumps [ssri](https://github.com/npm/ssri) from 8.0.0 to 8.0.1.
- [Release notes](https://github.com/npm/ssri/releases)
- [Changelog](https://github.com/npm/ssri/blob/latest/CHANGELOG.md)
- [Commits](https://github.com/npm/ssri/compare/v8.0.0...v8.0.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
FontoXML/fontoxpath,FontoXML/fontoxpath,FontoXML/fontoxpath