build(deps): bump parse-server in /apps/OpenSignServer

Bumps [parse-server](https://github.com/parse-community/parse-server) from 7.5.1 to 8.0.2.
- [Release notes](https://github.com/parse-community/parse-server/releases)
- [Changelog](https://github.com/parse-community/parse-server/blob/alpha/CHANGELOG.md)
- [Commits](parse-community/parse-server@7.5.1...8.0.2)

---
updated-dependencies:
- dependency-name: parse-server
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]